Problem
Solving
Most aquarium problems don't appear suddenly — they build quietly. When something looks wrong, the biggest risk isn't the issue itself, it's reacting too fast without understanding the cause.
First Rule — Pause Before Acting
Before changing anything, ask: Did something change recently? Was something added, removed, or cleaned? Has feeding increased? Has maintenance changed? If the answer is yes — that's usually where the problem started.
Common Problems & How to Respond
Cloudy Water
Likely Causes
- Bacterial bloom in new or disturbed tanks
- Overfeeding
- Filter disruption
- Sudden bioload increase
What To Do
- Stop feeding for 24–48 hours
- Avoid large water changes
- Check filter flow
- Test ammonia and nitrite
Fish Not Eating
Likely Causes
- Stress from changes
- Overfeeding previously
- Poor water quality
- New environment
- Bullying or competition
What To Do
- Reduce feeding frequency
- Observe behaviour closely
- Check water parameters
- Ensure food type is appropriate
Sudden Fish Losses
Likely Causes
- Incomplete cycling
- Overstocking
- Sudden parameter swings
- Temperature shock
What To Do
- Test ammonia and nitrite immediately
- Perform a controlled 10–20% water change
- Increase surface agitation
- Pause feeding
Snail Population Explosions
What It Indicates
- Excess food
- High organic waste
- Overfeeding (direct or indirect)
What To Do
- Reduce feeding immediately
- Remove visible snails gradually
- Increase maintenance consistency
- Avoid chemical snail killers
Algae Outbreaks
Likely Causes
- Too much food
- Inconsistent lighting
- Excess nutrients
- Over-cleaning followed by instability
What To Do
- Reduce feeding
- Stabilise lighting schedule
- Clean gently and consistently
- Address cause before scrubbing
Fish Gasping at Surface
Possible Causes
- Low oxygen
- High ammonia or nitrite
- Temperature too high
- Overstocking
Immediate Response
- Increase aeration now
- Reduce feeding
- Check filter flow
- Test water urgently
Gasping FishThis is one of the few situations where fast action genuinely matters. Act immediately.
When Problems Keep Returning
Recurring issues usually mean stocking is too high, feeding routine is off, maintenance is inconsistent, or expectations exceed system capacity. Fixing patterns matters more than fixing incidents.
Quick Reference
- Pause before acting
- Identify what changed
- Fix causes, not symptoms
- Avoid drastic corrections
- Stability resolves most issues
- Calm tanks come from calm decisions
Important Context & Expectations
Aquarium outcomes depend on system maturity, stocking levels, feeding routines, maintenance consistency, and environmental stability. Losses caused by water quality, stocking, or husbandry factors are not product faults.
For full details refer to our Terms & Conditions and Claims, Replacement & Insurance pages.