I want to build my system. I don't have problem finding woods or PVCs. My problem is finding the valves that can fit into the holes that I am going to drill on the fish tank, on the grow beds, or on my buckets. I talked to Home Depot, Lowes, HD Supply employees. I couldn't get anything out. How do you build those connections?
Where do you live?
Are you asking about the valves, or the seal in the tank where the pvc goes through?
If it is the seals, use UNISEAL, available on AMAZON. Just Google it.They work very well. Dont drill your holes until you get the seals. For better water flow, I suggest you get a size larger than you were originally thinking. I first used 1 1/2 inch but then went up to 2".
Thank you David, Paul. I am going with bulkhead for siphons on the grow beds and uniseals for the rest. Adding the valve to the PVC pipe should be easy. Thanks again for your inputs. Anthony.