mmckinniss
Aquarium Advice Regular
I have a fairly new tank - 55gal freshwater. I've been doing a fish in cycle, which is nearly complete. Nitrites have been present for a couple weeks, with the first hints of nitrates now arriving. I've been doing pwc's every couple days or so to keep ammonia & nitrite levels down. There are six small fish residing here (3 Platies, 3 swordtails). When I began, pH was quite high, around 7.8. Two weeks ago, I was in a more comfortable range, ~6.8. I'm now down around 6.2-6.4. What might be causing this? And how can I raise the pH in a healthy manner?