Plants showing Brown spotting on leaves and shredding.

I have two plants going right now. One is Pineapple Chunk and the other is Cheese Candy. The Pineapple seems to be getting these really bad brown spots forming in the leaf margins and the Cheese Candy is showing signs of shredding between the leaf margins. Can anyone tell me what it up? They are both being grown in B'cuzz mixx with General Organics nutrients and R/O water. I am at about week 5 of veg and feeding at about 750ppm with CalMag going in the water first at 250ppm. I have some pics of the problems, the first 3 pics with the brown spots are the Pineapple Chunk and the last 3 pics that look like shredded lines in the margins are the Cheese Candy. Any help would be greatly appreciated. Thanks in advance.

looks like a mag problem but you said you add cal/mag. ph?

I don't mess with the ph of the nutrient solution since it says not to with this General Organics stuff but it seems like it goes in way to acidic, like below 4...I can't say exactly because I think my ph pen is garbage so I use the solution to test with instead and it turns red when tested, but the run off after feeding with nutrients seems like it is 7 or a little higher. I used dolomite at the beginning, mixed it in with the water during seedling stage to kind of help stabilize the soil (maybe used like 1/3 cup in a gallon and ran a gallon through each of the plants) haven't used any more since. When I water with just water and no nutrients I put a drop of lemon juice in each gallon of water to bring the ph to about 6 and then water them, but the runoff ph always stays at like 7 or 7.5, and I think it's because of the dolomite. I have been feeding with nutrients once a week and once a week I use just water with some cal/mag in it (usually 5ml). They are in 5 gallon pots so they don't require daily waterings. Let me know what any of you think, if you need more info let me know and I will do my best to let you know everything.

OK....I didn't really receive much feedback on this except a possible cal/mag problem, but that's ok because I think it has cleared up for the most part. Now I have a different problem that I can't figure out. Maybe someone could identify this for me and tell me what to do to fix it. The leafs on my cheese candy are starting to turn like a rusty brown color throughout the veins of the leaves. I am including pics...please let me know what this could be.

kevmeyer84 said:

OK....I didn't really receive much feedback on this except a possible cal/mag problem, but that's ok because I think it has cleared up for the most part. Now I have a different problem that I can't figure out. Maybe someone could identify this for me and tell me what to do to fix it. The leafs on my cheese candy are starting to turn like a rusty brown color throughout the veins of the leaves. I am including pics...please let me know what this could be.
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According to the chart it could be the beginning of a Phosphorus deficiency? Check your nutes.

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