Plant trouble, Need help.

I have a Ebb& flow system with 3 plants in it, My plants have been on 12/12 light for about 3.5 weeks. Plant tray is flooded every 4 hours for 4 minutes, just enough time to fill the plant tray for 1 minute, while totally full. I am useing 4.25 OZ of Botanicare Power flower, 7.0 tsp of KoolBloom, and 56 ml of Hygrozyme for 7 gallons of RO water at about 5.5-6.0 PH. Only one plant is looking bad. This trouble is only in the middle part of the plant mainly. Little up top but not much.

Any Ideas on what is going on here? here is 3 photos, first 2 photos are of the bad plant, and the 3rd one is of one ot the healthier plants.

Some of the Bottom fan leafs are turning very yellow.

Any Help or ideas would be greatly appreciated.

If your using RO water you need Cal Mag+ homie.

what is Cal Mag+ do?

your using to boosting agents and no actual bloom nutes

Can I have this spelled out? :)

I am new to all this.

ok, I just read instructions, and what I understand. PowerFlower is a one piece Flowering Nut, and KoolBloom is the booster. Am I wrong?

I use Botanicare products as well but I use the prob-bloom and Hydroplex....i'm not too familiar the "plant power" line. dustko is correct imo...you need Cal-Mag if you use RO water. Cal Mag puts back all the good things your RO system takes out of your water (calcium, minerals, etc) ;) so you can not only spend money to take everything out of your water but also spend money to put things back in.:(

Cal Mag is a biggie. :thumbsup:

Ahhh Crap... Ok.. LMAo

Ok, so I did not have Cal-Mag. And I understand I need to get this, but do you really think, not having Cal-Mag, is what caused my trouble?

yes I do. Two of the most common problems are calcium and magnesium defeciencies.....many trace mineral blah blah defs are all prevented by CalMagPlus. Get some asap and start using it.