I recently plumbed a closed loop in my new 210g tank. After everything set and I fired it up I had a pin-hole leak in one of the juctions between a bulkhead and its corresponding pipe. Its one drip every 4-5 seconds. I havent put salt in the water yet so that might help it. Is there another way to fix it? I tried adding more PVC glue but the water drips and pushes the glue away before it can set. Any suggestions?