The most obvious thing they do is remove particles and sediment. The only filters I have experience with are UGF
and walmart style HOB
. My Regent Aqua Tech filter cartridges are a plastic mesh for removing particles and activated carbon.
What all does activated carbon do? I think it removes chlorine and ammonia - but what else does it remove? Ammonia should be removed by bacteria and plants and there shouldn't be any chlorine in there. I assume that activated carbon also removes other chemicals.
I have a 6 stage RO
filter. I'm thinking of taking half on the water after the three carbon filters and before the RO
membrane and the other half of the water after all 6 filters. I'm guessing this will remove chlorine insecticides and most other chemicals in the water, while still leaving the minerals and electrolytes for the fish and plants. If I carbon filter all water that goes into the aquarium is there any need for the activated carbon in my HOB
Do any of the fancier filters do anything more than particle filter, carbon filter, and provide a place for beneficial bacteria?