try googling a hydro shop for a electronic type ph tester, but for the soil, those capsules type ones from ace are perfect. YOu might as well grab those ph strips for the water so you wont need the electronic one just yet, maby down the road a bit. They are super handy. I saw the littte clone in the rockwool. Its barley rooted so its going to take time for that clone to improve in size. Do not water that clone. You should have kept it out untill it was fully rooted but since you didnt, it will need even less water. I keep my rooting clones under a humidity dome 78 degrees 80-90% humidity. They only way for unrooted clones to drink, is threw the leaves. Thats why I foliar feed and keep the humidity really high,giving th e rockwool cubes water once every 5-7 days. Takes about 15-20 days to be fully rooted. As for the coloration for the leaves. Im sure ph problems are causing this so you'll have to get back to me with the ph test results for me to confirm the larger ones problem. The litttle one too!
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