Okay, I just can't solve this problem. I have a 50 gallon tank right? The Nitrate is very high. I've been doing massive water changes, and at most every two days I've been doing them. Whenever I do the water change I add the conditioner, the PH 8.2, and I WAS using AmQuel + to remove the Nitrates, but it didn't work so I've been using Prime, but that isn't doing anything either. I'm have no idea what to do.