Originally Posted by Sf1
I already have 2 Fluval C3 on my 29G planted tank.
It's OK, but not perfect. I need a little more mechanical filtration.
So, I want to add another filter. Maybe another C3, maybe C4, or maybe Eheim 2215 or Fluval 206.
Do canister have much better mechanical filtration? Sechem Matrix works better to denitrat with canister?
I cleam my HOBs every week, do I need to clean canister less or more?
I've read a lot about over filtering a tank and it's not wrong, but it is unnecessary and expensive. A 29 gallon tank is fine with a filter system with a gallon per hour (gph
) rating of 4 times the volume of the tank in gallons or roughly 120. If you're doing a good job of managing the tank by changing half the water every week, then you're removing the toxins in the water well before they build up to harmful levels. The filter is just doing a very, very small job as a backup water cleaner. It just takes in toxic water and returns the same water, just a little less toxic. You could add ten filters to the tank and they'd all just be moving dirty tank water.
I'd suggest an aggressive water change routine and a basic filter. Your fish and plants will appreciate the frequent, large water changes much more than multiple filters.
Just one reporter's opinion.