Hello BigToke, hope you are well. After 10-11 years of PPKing, I must quit it and start anew. Youre B-Bs look interesting and worth a try. It'll be 3 months before tear down and rebuild. I leave the PPK because of age and physical limitations from a back injury, I'm having a hard time moving the media for reuse & nutrients and making RO water and this will help me allot. Your pictures and tutorial are/is very helpful. Thank you. I havent read enough yet and I will get to why the tap water but great thread.