Confused! Nute burn or deficiency

Hello. First time coco grower here. I have a 16 plant 4x4 scrog underway. 8 bubilicious and 8 susperskunk from Nirvana. Plants were rooted in a bubble cloner and then planted in 3gal pots filled with GH coco. Plant are being feed via drip lines and are under 2 500w blackstars and 2 4 ffot t5's to fill in the shadows a bit. I noticed as some of the clones were rooting they began to ever so slightly yellow. I thought nothing of it. Clones did well for about 2 weeks growing larger and appearing healthy. Then I fairly certain I burned the hell out of them. I didn't have an EC meter (I know two leds and no EC meter jokes on me....opps) and I followed the fox farm feeding schedule regarding strength. I got a meter and found my EC at 2.4 so I flushed and brought the EC down to 1.2 and have been feeding with that for a week. Equal parts fox farm grow big and big bloom plus 10ml of cal/mag per gallon ph'ed to 5.8 and set to 1.2 ec. Im not seeing a real great recovery though. The new growth appears to be yellow and im seeing some almost tiger striped yellow on some larger plants fan leaves. some of the smaller plants are show the slightest sign of tip burn. I feel like Im running a deficiency on some plants while burning others.....Or maybe the tiger strip is a sign of burn also? Any advice would be awsome! Im really worried I am going to have to scrap this grow and start fresh. For whats is worth I have check EC of runoff and it comes out arounf 1.2-1.4 I have read this is a useless test with coco however since it sponges some nutes and passes others. Also I am feed 5 days in a row with 10% runoff and then drenching (20-30% runoff) with straight water on the 6th day. Runoff Ph'a have always been between 5.8-6.3. Thanks a ton for any help! I have been reading and researching for a few days but I feel like I have hit a brick wall! If any other photos are needed please let me know and I will get them up. Want to see the setup there are pictures at my Journal which is on pause while I try to get these bitched healthy again lol. https://www.rollitup.org/grow-journals/603954-2-x-500-blackstar-4x4.html

143 views and no ideas? Someone has had to have seen this before. Anyone.....

After more research I feel this could be a cal/mad def even with the 10/ml per gallon. I am folier feed with a light concentration of cal/mag now. Hopefully it helps.

I was really hoping to get some info from the experienced growers out there. Guess a few sentences is to much to ask for. I'll figure out the issues on my own. Thanks for the help RIU.

CalMg def starts on the leaf and works its way out to the edges. ...... GH coco is not rinsed. That means it has a ton of sodium in it which will burn your plants (and that is what is happening). You have to rinse the stuff like 10 time before it is gone. Also, when using coco, add some dolomite lime to fix the calcium issue. Coco hogs calcium up like no tomorrow. Im sorry but I think it would be better to scrap that grow and try it again with Botanicare Coco (It is rinsed and composted), perlite and dolomite.

i didnt even need to expand the pic to know its nute burn. Flush the coco with 5.8 water and dont feed for 1 weeks then bring back nutes -20%.

jneely said:

I was really hoping to get some info from the experienced growers out there. Guess a few sentences is to much to ask for. I'll figure out the issues on my own. Thanks for the help RIU.

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That time of the month is it princess?

• That time of the month is it princess?​
  
  

I suppose I am going through male PMS lol. Just Really frustrated. Did alot of research and preparation for this grow and not seeing the results I had hoped for. Wish I would have stuck with soil. Also wish I could find a really nice in depth grow guide on coco drip systems. Regardless thanks for the replies! I made a water wand out of a valve and some 1/2 PVC and gaveView attachment 2469535View attachment 2469536 all the pots a healthy flush with ph'ed water and cal/mag. Flushed untill runoff was equal to input.