First post and probably a question I'll answer myself, BUT. My pump failed two days ago, and I finally installed a replacement. I was manually filling my bed (40 gallon tank and 40 gallon media bed) whenever I had a chance, and leaving the grow bed approx 3/4 full while away. The fish seem ok right now (tetras, a small channel catfish, and a small pacu). Plants still doing good. My levels are…