I read your posts Andrew,....I'm looking into them. I believe I now have my rock leaching PO4 problem solved, and thought the sand might still be leaching also,...but now I'm not so sure as the tanks PO4 seems to stay in the 0.03 to 0.04 range
. I thought the cucumbers would help remove algae in the sand, but now I'm not sure if there would be food for them. I do plan on getting some as I "feel/can see" a need.---Rick
