Leaves Edges Curling Up & slowing yellowing!? HELP

Two female plants of unknown strain once is doing fairly well while the other looks to not be doing so good. 70 watt HPS about 18" away from plants. Temp= approx. 75f. Fed every Tuesday/Saturday with Schultz bloom builder 10-54-10. Plants are about 8-9 weeks old been in flowering for about two. Any help would in saving these babies would be great!

Can you post some pics?

I'm blind...can't see your pictures....So, I refuse to help you with my novice advice.

Clearly by your pics you have a deficiency of impregnatable fortitude.

131 views and only 3 replies someone please help. i know no one wants to see a plant die as bad as me. its mostly just all the top leaves but slowly making its way down.

hmm well fist Im thinking to hot .. but that do look a bit wierd ? and you say your temps is 75F

but normaly curling edges is a sign of heat stress ...

I know .. I have it a bit .. but only at the top of some few of my bud leaves that are close to my 600W HPS

your sure you did`t over feed it or that salts have been building up in your pot ? did you do a flush when you changes from Veg to flowering ?

might be PH/salt build up ? dunno Im no expert .. do some more research .. but might be a good idea just to water with normal clean water next run ?

might also need a flower nutriens that dont hold so much N. specialy after the fist two weeks .. could be the problem ?

P. is what you want most of .. a bit K ..

and if you can get it .. a bit of Epsom salt and some sugar/molasses can do wonders for flowering plants ...

1 table spon of delutet Epsom salt in 10L of water and then just water ..once ... will add magnesium and sulfur .. boath good for a flowering plant that need to take up a lot of nutriens .. will surrport that ..

and some molasses for last 4 weeks or so .. 1 spoon per liter of water .. evry seccon time is fine .. of course beside your normal bloom nuts (mine is 2-8-2 I belive)

also .. I dont know what pot you use and what kind of soil and if you did a flush and if your soil PH is with in ranges 6-7PH .. but I had a few problems with one of mine in the start of flowering and I did just get some Lime/Mearl .. agin .. a few table spoons on top of my soil and a watering ...

may be heat stress. only took temp with a digital kitchen thermo. so i just added a oscilating fan. flushed the plants yesturday, run off tested 6.2-6.6ph. and im just using your average pot from canadian tire. may have nute burn but am not sure. went back to watering with just plain phd water hoping to save them. how would i know if i need to water with epsom salt and molasses? when should i do it, and what are the 'pros' and 'cons' if any cons at all. thanks for your help.