🧪 THE BALANCE EXPERIMENT — JULY 2026 JOURNAL RECAP
Dates Covered:
July 1–30, 2026
Approximate Experiment Days:
Day 81 → Day 111
🎯 JULY PROJECT FOCUS
July marked a transition from basic stabilization toward long-term optimization.
Primary areas being monitored:
- Nitrate accumulation
- Reduced feeding
- BBA progression
- Summer heat
- Evaporation / top-off demand
- Mechanical filtration efficiency
- Refugium maintenance
- Plumbing reliability
- Preparation for future automatic top-off (ATO)
The aquarium continued to behave as a mature and generally stable ecosystem throughout the month.
🍽️ PHASE 3C — REDUCED FEEDING SCHEDULE
The new feeding schedule began June 28 and continued throughout July.
FEEDING DAYS:
Monday:
- Flakes
- Algae wafers
Wednesday:
- Brine shrimp
- Bloodworms
Friday:
- Flakes
- Algae wafers
NO PREPARED FEEDING:
- Tuesday
- Thursday
- Saturday
- Sunday
Goal:
Reduce total organic input while maintaining healthy fish and shrimp.
Primary variables being monitored:
- Nitrate accumulation
- Fish body condition
- Shrimp activity
- BBA progression
- Malaysian trumpet snail population
- Maintenance interval
The amount fed during individual meals was also reduced compared with the earlier feeding routine.
🐌 MALAYSIAN TRUMPET SNAIL OBSERVATION
Occasional dead Malaysian trumpet snails continued to be observed floating at the surface.
Possible explanations considered:
- Natural mortality
- Population adjustment after previous overpopulation
- Reduced available food
- Competition within the snail population
No widespread snail die-off or associated livestock stress was observed.
📅 JULY 6 — DAY 87
Nitrate:
- ~20 ppm
Temperature:
- ~84°F
Top-Off:
- 8 containers
Feeding Trial:
- Approximately one week completed
Observations:
- Fish normal
- Shrimp normal
- Plants growing
- No abnormal livestock behavior
Major Observation:
Eight containers represented one of the largest recorded top-offs of the experiment.
Summer heat had become a major factor in evaporation.
🎯 JULY 9 — DAY 90 MILESTONE
Nitrate:
- ~40 ppm
Livestock:
- Fish behaving normally
- No visible stress
DAY 90 PROJECT MILESTONE:
The aquarium officially completed 90 days of continuous Balance Experiment observations.
Major findings established during the first 90 days:
- ✓ Aquarium remained biologically stable
- ✓ Fish tolerated reduced daytime aeration
- ✓ Summer heat strongly affected evaporation
- ✓ Refugium became heavily established
- ✓ Water changes repeatedly returned nitrate to the low range
- ✓ Nitrate accumulation developed a recognizable pattern
- ✓ BBA remained the primary persistent algae issue
- ✓ Reduced feeding could be continued without obvious livestock problems
NEXT DEVELOPMENT:
Begin preparing for an Automatic Top-Off system using the evaporation data collected during the first 90+ days.
📅 JULY 11 — DAY 92
MAJOR SUMP / EQUIPMENT SERVICE DAY
Pre-Maintenance Nitrate:
- ~40 ppm
This maintenance session intentionally focused much more heavily on the sump and equipment than the display.
WATER CHANGE:
Display:
- Approximately 25%
Sump:
- Nearly 100%
🌿 REFUGIUM INSPECTION
JAVA MOSS:
A very large, dense mass of Java moss had developed in the refugium.
The moss was removed and inspected.
Unexpected Finding:
Very little brown detritus or mulm was trapped inside the Java moss.
Most of the moss was:
- Green
- Healthy
- Dense
- Actively growing
Only small amounts of dead/brown material were removed.
The healthy Java moss was returned to the refugium.
Working Hypothesis Before Inspection:
Dense Java moss may have become a major detritus trap.
Result:
This hypothesis was significantly weakened.
Because the refugium sits AFTER the mechanical filtration, most particulate waste appears to be removed before water reaches the moss.
Potential Future Idea:
The Java moss is growing vigorously enough that excess healthy growth could potentially be harvested or sold instead of discarded.
🌱 HEAVY POTHOS TRIMMING
A heavy pothos pruning was performed.
Unlike the Java moss, substantial pothos biomass was physically removed from the system.
This represented direct nutrient export.
The pothos had demonstrated significant growth since the previous maintenance cycle.
🧽 MAJOR MECHANICAL FILTRATION FINDING
Inspection of the sump mechanical filtration revealed a very different condition from the refugium.
Polyfill:
- Very dark
- Heavily loaded
- Replaced
5D / Five-Layer Filter Pad:
- Very dark
- Heavily loaded
- Replaced
Upstream Sponge:
The sponge immediately before the final filtration stages was heavily caked with detritus.
Other reusable sponges:
- Quickly rinsed
- Returned to service
MAJOR FINDING:
Visible particulate waste was concentrated primarily in the MECHANICAL FILTRATION stages rather than the refugium.
The sump appears to be functioning as designed:
🔬 NEW NUTRIENT HYPOTHESIS
The July 11 inspection created a new working hypothesis.
Although the mechanical filtration successfully captures solid waste, heavily loaded media may retain organic material long enough for decomposition to continue.
Possible result:
This remains a working hypothesis and has NOT been proven.
Future nitrate cycles will help determine whether more frequent mechanical media servicing slows nitrate buildup.
⚠️ CHECK VALVE — RECURRING INFRASTRUCTURE ISSUE
During July 11 maintenance, the return-line check valve was again found sticking.
The check valve was cleaned.
This was NOT the first occurrence.
Previous check-valve failure had already caused sump overflow and approximately five gallons of water loss.
CURRENT MANUAL PROCEDURE:
When return pump is turned OFF:
1. Close return-line ball valve
2. Turn pump OFF
3. Perform maintenance
When restarting:
1. Confirm sump condition
2. Open ball valve
3. Restart return pump
IMPORTANT FINDING:
The check valve can no longer be considered a completely reliable independent backflow safeguard.
The manual ball-valve procedure currently provides the backup protection.
Future infrastructure optimization should address this before or alongside major automation upgrades.
📅 JULY 11 — POST-MAINTENANCE
Approximately two hours after maintenance:
Nitrate:
- ~5 ppm
This became the new post-maintenance baseline.
Important Interpretation:
Because nitrate is dissolved in the water, removal of dirty mechanical media alone cannot explain an immediate drop from approximately 40 ppm to 5 ppm.
The pre-maintenance high-range nitrate reading may have contained significant test-color uncertainty.
Therefore:
~5 ppm was recorded as the confirmed new baseline without assigning the reduction to any single maintenance action.
📅 JULY 14 — DAY 95
Nitrate:
- ~10–20 ppm
Temperature:
- 82.7°F
Top-Off:
- None
BBA:
- No obvious spread
Feeding:
- Reduced schedule continued
Fertilizer:
Fertilizer was accidentally dosed one day early.
Approximate Dose:
- ~1 pump
The fertilizer bottle was nearly empty, producing uneven squirts, so the exact dose was uncertain.
No corrective action was taken.
📅 JULY 16 — DAY 97
Nitrate:
- ~10–20 ppm
- Color appeared lighter than July 14
Temperature:
- ~81°F
Top-Off:
- None
Reason for No Top-Off:
The sump had been filled somewhat higher than its usual operating level during the July 11 refill.
BBA:
- No obvious spread
Livestock:
- Normal
Interpretation:
Nitrate remained in the low range five days after the major sump service.
📅 JULY 19 — DAY 100
Nitrate:
- Approximately 20–40 ppm
- Appeared closer to 20 ppm
Temperature:
- 83.4°F
Top-Off:
- Approximately 3 containers needed
BBA:
- No obvious spread
- If growth was occurring, it appeared extremely slow
Livestock:
- Normal
This represented a gradual nitrate increase rather than an obvious sudden spike.
📅 JULY 22 — DAY 103
Nitrate:
- ~40 ppm
Temperature:
- ~83°F
Top-Off:
- None
BBA:
- No noticeable spread
Water Change:
- Planned for later in the week
Major Observation:
Nitrate reached the established maintenance threshold approximately 11 days after the July 11 maintenance.
The reduced feeding schedule had therefore NOT eliminated nitrate accumulation.
However:
BBA appeared significantly more stable than during earlier phases of the experiment.
🐟 HIDDEN KUHLI LOACH QUESTION
A possible hidden livestock loss was considered as a contributor to nitrate accumulation.
Kuhli loaches had not been visibly observed for an extended period.
Because kuhli loaches are highly secretive and the tank contains substantial plant growth and hiding areas, their absence from view does not confirm mortality.
Working possibilities:
- Kuhlis remain hidden
- One or more kuhli loaches may have died unseen
- Normal organic accumulation remains responsible for nitrate rise
No definitive evidence of a hidden livestock loss was found during July.
No associated widespread livestock stress was observed.
📅 JULY 24 — DAY 105
LARGE WATER CHANGE
A large water change was performed.
Display:
- Approximately 60–70% drained
Sump:
- Approximately 90–95% drained
This was a much larger display reset than the July 11 maintenance.
Purpose:
- Reduce nitrate
- Reset water conditions
- Continue feeding optimization experiment
- Establish another clean nitrate cycle
📅 JULY 27 — DAY 108
Nitrate:
- ~5 ppm
Temperature:
- 82.5°F
Livestock:
- Normal
System:
- Normal
This reading occurred approximately three days after the July 24 water change.
Therefore:
~5 ppm was accepted as the confirmed post-water-change baseline.
📅 JULY 30 — DAY 111
Nitrate:
- ~5–10 ppm
- Low range
Temperature:
- 82.3°F
Fertilizer:
- Regular Tuesday fertilizer dose completed July 28
Feeding:
- Reduced Monday / Wednesday / Friday schedule continued
Fish:
- Normal
Shrimp:
- Active
BBA:
- No obvious spread
- Exact change difficult to visually confirm
🦐 NEW FOOD — SHRIMP CUISINE
A new shrimp-specific food was introduced near the end of July.
Updated feeding schedule:
MONDAY:
- Flakes
- Algae wafers
WEDNESDAY:
- Brine shrimp
- Bloodworms
- Shrimp cuisine
FRIDAY:
- Flakes
- Algae wafers
No prepared feeding:
- Tuesday
- Thursday
- Saturday
- Sunday
Shrimp cuisine represents a new variable and portions will remain controlled so Wednesday does not become an excessively heavy feeding day.
📊 JULY NITRATE TREND
July 6:
~20 ppm
July 9:
~40 ppm
July 11:
~40 ppm pre-maintenance
~5 ppm approximately 2 hours after maintenance
July 14:
~10–20 ppm
July 16:
~10–20 ppm
July 19:
~20–40 ppm, likely closer to 20
July 22:
~40 ppm
July 24:
Large water change
July 27:
~5 ppm
July 30:
~5–10 ppm
🌡️ JULY TEMPERATURE / EVAPORATION FINDINGS
Summer heat remained a major system variable.
Recorded temperatures frequently reached:
~81–84°F
Highest notable July evaporation event:
- 8-container top-off on July 6
- Tank temperature approximately 84°F
Summer operating strategy:
- Air remains ON during elevated-temperature periods
- Reduced daytime aeration is overridden when heat creates additional oxygen concerns
ATO Finding:
By Day 90+, enough evaporation data had been collected to begin planning an Automatic Top-Off system.
However, plumbing/backflow reliability must be considered during ATO design.
🖤 BBA — JULY TREND
One of the most encouraging developments of July was the BBA trend.
Earlier phases:
BBA repeatedly showed visible expansion.
July:
- No obvious expansion on multiple observations
- Any continued growth appeared very slow
- By late July, BBA remained present but did not appear to be actively spreading
This does NOT yet prove that reduced feeding caused the change.
Multiple variables changed:
- Reduced feeding
- Mechanical filtration service
- Heavy pothos trimming
- Water changes
- Summer operating conditions
However:
July represents the strongest sustained period so far in which BBA did NOT show obvious continued expansion.
🧠 JULY MAJOR FINDINGS
1. REDUCED FEEDING IS LIVESTOCK-TOLERATED
Fish remained normal.
Shrimp remained active.
No obvious negative body-condition or behavioral changes were observed.
2. BBA MAY BE STABILIZING
BBA remained visible but showed little or no obvious expansion during July.
3. NITRATE ACCUMULATION CONTINUES
Reduced feeding did not eliminate nitrate accumulation.
The system still reached approximately 40 ppm between maintenance events.
4. REFUGIUM MOSS IS NOT A MAJOR VISIBLE DETRITUS TRAP
Dense Java moss contained surprisingly little brown organic debris.
5. MECHANICAL FILTRATION IS CAPTURING LARGE AMOUNTS OF WASTE
Several mechanical filtration stages were heavily loaded.
One sponge was substantially caked with detritus.
6. MECHANICAL MEDIA SERVICE INTERVAL DESERVES MORE STUDY
The media may successfully trap solids while also allowing captured organic matter to continue decomposing.
More frequent servicing may potentially reduce nutrient accumulation.
This remains unconfirmed.
7. POTHOS IS PROVIDING REAL BIOMASS EXPORT
Heavy July pruning physically removed substantial plant material and therefore exported nutrients from the system.
8. SUMMER HEAT REMAINS IMPORTANT
Temperatures around 83–84°F produced increased evaporation and triggered continuous-air safety overrides.
9. CHECK VALVE REMAINS THE PRIMARY INFRASTRUCTURE WEAKNESS
Repeated sticking means the return-line check valve cannot be trusted as the sole protection against backflow.
Manual ball-valve operation remains necessary.
10. THE SYSTEM REMAINS BIOLOGICALLY STABLE
Despite:
- High summer temperatures
- Reduced feeding
- Aeration experiments
- Large water changes
- Heavy sump maintenance
- Plant pruning
- Mechanical media replacement
Fish and shrimp continued behaving normally.
🔬 CURRENT WORKING MODEL
Current optimization strategy:
🚀 NEXT PHASE / AUGUST OBJECTIVES
Continue:
- ✓ Monday / Wednesday / Friday feeding schedule
- ✓ Weekly fertilizer schedule
- ✓ Summer heat aeration override
- ✓ Nitrate monitoring
- ✓ BBA monitoring
- ✓ Mechanical filtration observations
- ✓ Shrimp and fish body-condition observations
Investigate:
- Whether BBA remains stable long-term
- Whether nitrate accumulation slows during the next complete reduced-feeding cycle
- Whether mechanical media should be serviced more often
- Whether kuhli loaches can be visually confirmed
- Long-term Malaysian trumpet snail population response
Upcoming Infrastructure Project:
AUTOMATIC TOP-OFF (ATO)
ATO planning can now begin using more than 90 days of evaporation observations.
Important prerequisite:
ATO design must account for the recurring return-line check-valve/backflow issue.
🏁 END-OF-JULY PROJECT STATUS
Experiment Age:
111 Days
Biological Stability:
STRONG
Fish Behavior:
NORMAL
Shrimp Activity:
ACTIVE
Plant Growth:
STRONG
Refugium:
MATURE / HIGH GROWTH
Nitrate:
PREDICTABLE BUT STILL REQUIRES WATER CHANGES
BBA:
PRESENT BUT APPARENTLY STABILIZING
Feeding Optimization:
ONGOING / WELL TOLERATED
Summer Heat Management:
ACTIVE
Mechanical Filtration:
EFFECTIVE BUT REQUIRES PERIODIC WASTE REMOVAL
Primary Infrastructure Concern:
RETURN CHECK VALVE
Next Major Development:
AUTOMATIC TOP-OFF SYSTEM
JULY SUMMARY
July was less about changing the aquarium and more about understanding where waste actually moves through the system.
The biggest physical discovery came during the July 11 sump service.
The dense refugium Java moss was surprisingly clean, while the upstream mechanical filtration contained heavy visible detritus.
That observation shifted attention away from the refugium as a suspected waste trap and toward the maintenance interval of the mechanical filtration itself.
At the same time, reduced feeding continued without negative effects on fish or shrimp.
Nitrate still accumulated, meaning reduced feeding alone did not solve the nutrient cycle.
However, BBA showed its most encouraging trend yet: throughout much of July there was no obvious continued spread.
By July 30, following the large July 24 water change, nitrate remained only ~5–10 ppm, fish were normal, shrimp were active, plants continued growing, and the aquarium remained stable.
The Balance Experiment is now moving beyond stabilization and increasingly toward efficiency, automation, and long-term maintenance optimization.