Biofiltration vs medications

[YOULOOKLIKEAFISH]

does quick cure, melafix, or pimafix destroy nitrofying bacteria? if so does one of the 3 do more damage?

[redtailfool]

Not sure about quick cure but melafix and pimafix doesnt wipe out your good bacteria. Might wanna check aq pharms website about quick cure.

[Miles]

Quick Cure is a mixture of Formalin and Malachite Green. So is Rid-Ich, and most other general 'turn your water blue' medications. You can buy pure malachite green in bulk in the pond section usually, as a koi remedy, for much cheaper. I have also read that Formalin and Malachite Green mixed togethor is very toxic, both to fish and parasites.

If I am not mistaken, both Formalin and Malachite Green will harm biological filtration..

[The Mule]

None of the meds you listed will affect your biological filtration. The meds you need to avoid using in your main tanks (use a quarantine tank instead) are antibiotics. Antibiotics kill bacteria, and since your bio-filter is made up of bacteria, it can be severely affected by antibiotics.