Yellowing wedding cake

Week three into flower. 3 wedding cake and 3 wedding crashers. 1000w hps. Temps between 70-80 deg day or night. The soils shit thought. I didn't add perlite its viagro and it's got 9 months worth of feed in in. I know it's probably no good. But I'm having problems with the tops of the buckets drying and the bottoms staying wet. I water till runoff every third water. I try to water only 3 times a week. Water ph is roughly 6.5. Should I ph my water before I add it to the soil? I dont have a digital tester or a soil tester. But the three wedding cakes are struggling tough and yellowing bad 2 I'm not sure are going to make it the third is doing well but is definetly showing signs of some sort of deficiency. The 3 wedding crashers are doing great except one is no just starting to turn from green to yellow. I add epsom salt, super thrive, molases and calcium every third water when flushed. Please help me through this grow

They look hungry

So bump up the nutrients?

What nutes are you feeding it if any. You can also drill more holes in the bottom and sides if you need more drainage

I've got dark energy or superthrive I'm using for nitrogen, epsom salt, bonide 1.6% calcium, and I add a little mollassis

It drains fine but it doesn't dry well

This is what they are in. 5 gallon pots

You need a complete npk nutrient I doubt that would feed for 9 months