I need to clean out my pre pump filter it is full of leaves but I can’t figure out how even though I have done this once before. But when I opened the lid water gushed out of the basket so forcefully it almost knocked me over and I thought I would never ever get the lid back on and there was nobody to run to for help. I’m widowed, I live alone and most importantly I’m old and don’t have the strength to make that mistake again. I thought I knew what each valve did and whichever way the valve was facing I turned it in the opposite direction. There was a black one on the top I couldn’t figure out. If it’s ok I’m going to post a few pictures here and I hope it’s not impossible for someone could give me some pointers