well, i went and done it. replaced the wheel with some lr
rubble. not alot though, as i want it all under water. i'll keep the wheel in a bucket of old sw
for the time being. i'll give it a couple of weeks and recheck the nitrates and if i still have the same readings i'll do 3 gallon pcw every week(instead of 2). That would be more than enough water change for a 12 gallon. I'm going to keep running the cartridges though. if i change the filter every 10 days the cartidge is very clean. I should up my estimate of the amount of lr
i have, i think it's more like 12+ lbs. I would add more but in this small of a tank i want to keep a descent water volume. I'll reply to this post in a couple weeks a nd let you know what the nitates are. BTW. i have a true perc, six line, and firefish. i feed sparingly, have some snails and just bought some small snails which should survive the wrasse ( i hope!!!). Ihope this works I don't want to crash my tank!!!. Thanks for your inputs.