Magnesium Difficency?

I gave them nothing but Phed water for about a week, but they might need to get the entire mix flushed out. Because I don't have an irrigation system this requires quite a bit of work... but in the end it may be worth it.

I was just afraid if I gave them a solid flushing, I would need to work up super slowly to 900 PPM... and I wanted to give them the "Shooting Powder" for the last few weeks before giving them nothing but ph'ed water for the last week or so.

I was also browsing through House and Garden's Website...and I realized you are never supposed to introduce their product "Drip Clean" that supposedly will clean out metals from your medium, lessening the need for flushing... well, I introduced it mid cycle which may have caused the salts\metals to be released after they had already build out. So... I am thinking I may be locked out because of that and other reasons.

It's possible you're locked out, but I still think it could be just normal yellowing. Especially since new growth is good.

Opie...yeah I'm kinda with you bro but I'm gonna go ahead and do a pretty nice flushing anyhow. The yellowing has been going on for several weeks now which leads me to believe I am locked out... not terribly, but clearly the plants are trying to tell me something.

I bought some Clearex and I'll give them enough water so that I get a decent amount of run off coming out of the bottom. I have no irrigation system set up as of yet, so flushing is a bit of a pain in the ass but sometimes it takes hard work to be rewarded properly. Wish me luck!