Where is a reliable source for R/O water to buy? I want to have fish in an aquarium but the water hardness is out of sight. I am in North Batinguel.
Yes I understand. It would be economical to ise rain water for many aquaria and pond. I have 1 30 gallon tank and not much space for collection or storage. If I filled the entire tank with it it would only be 300 peso but then then the hardness would be way too low.