So while my tank (aqueon 15 gal
column with whisper 20 HOB
filter) has been up and running happily for ~4 months, a batch of apparently sick platys from a LFS
and the subsequent treatment ( API T.C. Tetracycline for fin and tail rot) appears to have knocked out my biological filter. Unfortunately, I didn't realize this until I had restocked. I currently have 1 sunset platy, 1 peppered cory, and 6 serpae tetras. I also have live plants including amazon swords (thriving), java fern, water wisteria, and scarlet temple.
I have been doing 20-50% water changes on an almost daily basis to keep the waste in check. After a ~50% change late last night when I got home from an overnight trip to find everyone looking a little iffy, the current parameters are:
For reference, my untreated tap water parameters are:
pH 8.8+ (test kit tops out)
I treat with Kordon AmQuel and NovAqua and have been using Seachem Neutral Regulator to try to stabilize the pH. I have also been adding Top Fin bacterial supplement with water changes and API Leaf Zone ~weekly.
My pH has been all over the place. More often than not, it has been reading 6 (or lower-test kit bottoms out) even with the Neutral Regulator. Any suggestions? Everyone seems to be doing ok at this point - active and eating well (the serpae are voracious eaters!) but the daily WCs are getting a little tiresome!