Yesterday I bought a Clown Pleco and some Harlequin Rasboras. The Rasboras seem to be doing fine, but the Pleco showed some weird behavior today. He has been sitting at the bottom of the tank, usually under some plants or driftwood, not doing much. All of the sudden bursts out from his spot swimming erratically in all different directions for about 5 seconds before stopping and laying on his side for a little while until he turned over and laid on his stomach. He has swam erratically like that twice (that I've seen) and I don't like it one bit.
I recently changed the water in the tank and Ammonia & Nitrites are at 0, Nitrates at 10, pH 7.6. I have aerated the tank and it is currently sitting at 76 F.
:help2:

I recently changed the water in the tank and Ammonia & Nitrites are at 0, Nitrates at 10, pH 7.6. I have aerated the tank and it is currently sitting at 76 F.
:help2: