Jesus Christ guys!!!! You had him take him plants out of MG- a medium with all the nutrients he would ever need- into PEAT MOSS? FUCKING PEAT MOSS?! WHAT. THE. FUCK. Are you purposely trying to fuck him up??
Haleo- these guys have no idea what they are talking about. They are having you pH your water while your medium is in the 4.8 range! PH neutral is 7! Your plants aren't showing signs of deficiency, they are dying.
What we have here is really problematic- but reversible. Your plants are basically getting fried. I'm sorry dude but you got fucked with RETARDS GIVING YOU BAD INFORMATION.
MG works with ALL manner of plants, and new gardeners should know that MJ IS NO DIFFERENT. It's not optimal- but it will work. I joined RIU and now all I see how terrible MG is! What makes MJ different? It works for beginners who aren't going to mix a fucking batch of 'super soil' or blend liquid nutes. It's what new gardeners need, it takes the guesswork out.
And this time, what it did was kill a guys source of personal bud. Way to go you fucking snobby prick asshats. Nice job.
If you want your plants to survive:
if you have that MG still around, mix up some of that with your perlite and vermiculite. The two additives are not raising or lowering pH, don't worry about them, they are to fluff up the mix, help it move air (roots NEED air) and hold water. If you want to keep the peat in there ok, but get them OUT OF STRAIGHT PEAT IMMEDIATELY. Your trying to grow weed in a peat bog! Google peat bog and tell me what you see growing there.
Plant them deeper, bury those stems- this is ESSENTIAL. Your plantlets are going to form adventitious roots; roots from the stem. It's a natural reaction that helps a plant survive if it gets buried. These new roots will save your plants. Not too deep, just get a lot of the stems under soil. Also, get rid of the solo cups. Go to Walmart, get some 1" pots. They are meant for plants, they have drainage holes. Water lightly once every two days, or enough to keep the soil damp, not soaking or dry. Just... Damp. (And while we're at it, stop pissing about with your water. The pH is fine. If its good for you, your plants will survive. Want to be fussy? Let a gallon sit out for a day so the additives in it can evaporate or buy distilled. Whatever.) If you want to drench them and let them dry, the plants have little mouths on the leaves called 'stomata' that they open and close to mitigate it, just like in nature. But optimally, you want to give them just enough water all the time.
Start from here. If they survive, we take it from there.
Commence douchebags spitting hate towards me.