Review on Aquaboon Pressure Certified Compatible Water Filter: Find the Perfect Match! by Ann Coleman

Overall this product works well but be careful: The 1" NPT thread on the top of each canister filter is NOT TAPERED. That means you need to find and purchase a 1-hex nylon fitting with packing gaskets. I FOUND THEM IN THE POOL. AMAZON DOES NOT OFFER THEM. This is the ONLY way this will work without leaks. The kit already comes with 2 pc hex fittings between each canister filter but they don't sell them. If it weren't for this problem - a good product. There is no support. Don't even try to email or call. This is a black hole. You're on your own, which is good if you know plumbing well. This product is not intended for beginner installation and you MUST have 1" HEX fittings with O-rings.