ThrowedToad
Aquarium Advice Freak
I found a 5 stage RO unit at a second hand store that was brand new for $20. I have heard that the ro membrane has a shelf life. If so should I replace it now to be safe? Also can I put a higher output membrane in or do I have to use the same output? It is a model #RO-TFM-5SV with a 15 GPD membrane.http://i119.photobucket.com/albums/o154/throwedtoad/S7304265.jpg