All right, your journals up, looks good.
You can get plastic covers for your blocks or make them, it will keep the algae from growing on top of the rockwool.
Heres a tip about rockwool, it tends to run on the soggy side soggy, and watch for salt-build up, I've used to use it a lot. Plugs, blocks, slabs. I like the Gordan EXPERT because the grain runs vertically.
You made some good choice's, The pH pen will become your best friend
