LED grow... what are we doing wrong?

First of all this is my first post, so thank you ahead of time for helping answer some questions! Anyway, we have a small closet grow area, using a 500 watt Blackstar Led grow light. Advanced Nutrients, organic Iguana Juice Grow and Bloom along with Nirvana bloom enhancer, were are choice of food for our girls. Organic soil was also used. We have several strains, a couple I don't know what exactly they are. Ph has been a constant 6.5. Anyway, recently the tips of our sugar leafs have started to brown up and die quite rapidly. The older sun leafs are not looking very good either. I understand some leafs will run its course, and die off. But, this seems excessive. We thought at first that maybe we burnt our ladies by overfeeding them. Could this be a result of that.Some advice would be great. Happy New Year!!!

looks like nitro burn and probably over watering to me. if you can i would trans plant into a little larger container and and dont feed for a couple weeks and let the plant wilt a little before watering with fresh water. of course you need to wet the soil at the time of transplant but then let it dry enough to see the plant droop a bit. hope this helps

Welcome to RIU AKgrower! It def looks like nute burn to me. Are you in AK? Anchortown maybe? If so, we need to talk and soon! You can PM me when you get a few more posts. Toke & Talk is a good place to burn some posts and get that post count up.

Hello Mr. Potpimp!
No actually we are from Oregon. Thank you very much for the advice! These plants will be only our 3rd harvest. We still have much to learn! And yea, Idefinitely think I burnt the little ladies. I don't think that we overwatered. We really only water our budding plants 2 maybe 3 times a week if they are looking ultra droopy and our vegging plants probably once maybe twice a week. Once again thanks for all the advice!

looks like nutes burn , the thing is now, your soil is full of it, you have to flush the soil , then cut off the dead leaves cuz they will never go back green, and hope the new leaves won't die as well,

i only use one type of nute that has everything in it , and i adjust the quantity accordingly on veg or flower, more on flower