Im growing nirvana ak-48 and kc brains mango from seed. The seedlings are around a week and 3 days old (mango's are a couple days behind the ak's) and I'm having a few problems with them. All plants were doing fine with 5.8 ph water and one drop of super thrive per gallon, until my dad thought it was time to fertilize them without consulting me and the first set of real leaves got nute burned. Since then they have only been given ph'ed water with one drop of super thrive per gallon every other feeding. Now I have a few question's and I seek the wisdom of the gc community! Most plants (some more than others) are starting to curl their leaves inward along the sides. Is this anything that i should worry about or correct immediately? Here is a picture of the worst case (no others are near this bad, but if you look closely you can see them curling a tiny tiny bit). This happens to be one of the mango's. My second question is about my ak-48 seeds. They look completely different! Same bag of seeds from nirvanna, germed at the same time, only difference is that i ran out of coco and the plant that looks different is in fox farms ocean forest. Two of my ak-48 seeds that are in 3 gal pots of coco and vermiculite have more rounded and short leaves, and the ak-48 that is in the ocean forest has longer, less wide leaves like the mango plants. First two pictures are of the rounded ak-48's, and the second two are of the more pointed one. Why are they so different? My third question is about soil ph. My meter says my soil is always at high 7, or even into 8! I have never watered with water over 6.0 ph and I flushed the coco before mixing it with vermiculite. my meter responds when i dip it into my ph up or down so I don't think my meter is broken, but ive never gotten the ph to drop below 7 even with multiple flushes of ph'ed water. Any and all help on my first kush/soil grow is greatly appreciated!