Quote Originally Posted by hbbusa28
Thanks for the advice guys. I'll stop spraying the leaves. I think I found the problem. It could have be K and Mg for all I know. I think the PH was locking up the nutes. Once I dropped it down the problem stop progressing. The res PH was 5.9-6.0 but when I check the run off PH it was a bit higher. Once I flushed the rockwool with PH around 5.6-5.7 and made sure the run off was the same the plant perked right up.

Thanks again.
You may need to try for 5.2 to 5.5 for about a week. Cover the rockwool before you get alga. Remember Rockwool holds water around the root ball and you can root rot a plant quick so keep an eye out and smell often.
Zandor Reviewed by Zandor on . Nute burn? Mg? K? - Getting really bad. Hey everyone. First time hydro grower. I'm been having some problems with my plants and haven't found the problem yet. Now it looks like they are going to bite the big one. The symptoms started with some brown/copper spots on the lower leaves. They started near the middle of the leaf, in between the veins as a single brown/copper spot. It then quickly progresses into larger brown/copper areas. Eventually taking over the entire leaf. It started on the lower leaves and has been makeing its Rating: 5