Hi guys, recently added a lone, fully grown Angel fish to the 55 gallon. Never owned fish this big and or course he is producing a lot of waste. I’ve noticed a lot of this trapped in the inlet pipe and wandering if this is normal, or if this waste should be sucked in by the filter. I thought all waste would be taken in by the filter but if this is not the case, am I supposed to just vacuum it? Pictures attached, and while I’m here, if anyone could try sex the fish that could be helpful for the future! Thanks