yeah i presoaked the rockwool in 5.5 ph distilled water. the nutes im using are insta green 3-0-0, floramicro and floragro also in 5.6 to 5.8 ph'd water. I bought the clone from my local dispensary. They were the ones who snipped the clones and i believe it had those spots on the leaves when i bought it but didnt think anything of it. I just thought it needed cal or mag. Yeah I change the water in my spray bottle every week.