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discus tank filter cleaning routine

Posted: Fri Oct 03, 2025 9:41 am
by matto
What's your filter cleaning routine for a Discus tank? I've got a 75-gallon with 6 adults, sand substrate, and a Fluval FX4. Been doing monthly rinses with tank water, but my nitrates creep up fast. Wondering if I should tweak it.

Re: discus tank filter cleaning routine

Posted: Fri Oct 03, 2025 9:43 am
by Sand
Monthly might not be enough with that bioload. I run a similar setup, 80-gallon, 7 Discus, and clean my FX6 every 3 weeks. Key is to rinse the sponges lightly, never replace all media at once. How often are your water changes?

Re: discus tank filter cleaning routine

Posted: Wed Oct 08, 2025 8:19 am
by Bolden
matto wrote: Fri Oct 03, 2025 9:41 am What's your filter cleaning routine for a Discus tank? I've got a 75-gallon with 6 adults, sand substrate, and a Fluval FX4. Been doing monthly rinses with tank water, but my nitrates creep up fast. Wondering if I should tweak it.
Nitrates climbing usually means overfeeding or insufficient water changes. I do 50% weekly changes on my 90-gallon, clean the filter every 2 weeks. What's your feeding schedule like?

Re: discus tank filter cleaning routine

Posted: Sat Oct 11, 2025 8:37 pm
by melodic
I've got a 55-gallon with 4 Discus and a canister filter. I rinse the media every 2 weeks, but only half at a time. My nitrates stay around 20 ppm. Maybe try adding more plants? I've got Amazon swords and they help a bit.

Re: discus tank filter cleaning routine

Posted: Sat Oct 11, 2025 8:39 pm
by Frost
Agree with Bolden on water changes. I do 40% twice a week on my 75-gallon, FX4 cleaned every 3 weeks. Also, check if your filter flow is strong enough. Discus like calm water, but weak flow can let debris build up.