We recommend a minimum 25% water change weekly. If you see signs of ammonia or nitrite, larger and more frequent water changes may be needed.

Depends on filter type, but most internal and external filters benefit from a rinse in old tank water every 2–4 weeks — never tap water, as chlorine kills the beneficial bacteria.

Not always, but it helps. Extra surface agitation improves oxygen exchange, particularly useful in densely stocked or warm tanks.

Weekly for established tanks, and daily during the first few weeks of a new setup (cycling) or after any big change.

Conditioners neutralise chlorine/chloramine in tap water; treatments cover a wider range, including bacterial boosters and problem-specific fixes (cloudy water, algae, etc.).