which ppm meter do i use by this i mean what is the range supposed to be from 0-999ppm? ?? please help
wow i know someone knows the answer to this question cant you take 1 min of your time to help a fellow pot lover
They should go higher than that. Try these Hanna is apparently the best. I have the all-in-one. http://www.htgsupply.com/viewproduct.asp?productID=47578 http://www.htgsupply.com/viewproduct.asp?productID=47565
Yeah eBay or these. http://www.htgsupply.com/viewproduct.asp?productID=47643 http://www.htgsupply.com/products.asp?categoryID=13