what can happen if i use an eheim 2215 canister filter as the only filtration system with a 125 litre aquarium?
will the fast flow increase or decrease the biological activity within the external filter many thanks in Advance for any help
will the fast flow increase or decrease the biological activity within the external filter many thanks in Advance for any help
it wouldnt harm it as the flow rate inside the filter would be the same
Depending on the litre per hour (LPH) it could work great
Although if its too high if could work as a "fish hoover"