Help with my seedlings

[Arjuna]

Howdy friends.
Hear I have my week and a half old moby dick autos and they have just started to get some spots and burnt tips. I haven't started nutes yet and have only added half strength voodoo juice from AN. I did a red change 3 days ago and have had the problems since then. I'm running hard water at 280ppm and had some large ph fluctuations on the first day of res change but have had it under control since then with it sitting at 5.5-6ph any help would be greatly appreciated as I want to start of with a small amount of nutes in the next few days but want to figure out what's messing with them first. Air temp has been sitting at 22-27c and res temp has been between 16-22c running LEDs at about 4 feet from the plant in a rdwc syston

Thanks all and happy smoking!!!!

 

[Waira]

Arj'-- Get me some pics in normal lighting please... LED and HID are lousy for diagnostics! Very likely though, it was those pH fluctuations causing this,.. things happen rather fast in hydro sometimes! HAs symptom progression stopped, or still advancing?

 

[Arjuna]

@Waira thanks for the help bro!! Hears a couple more (sorry they are still pritty terrible)

O yer I think they have stopped getting worse. I had 2 that where drooping tho as well and so I pored fresh ph adjusted water all over the clay and rockwool last night before lights out and they have perked right up again. So a small victory could be drawing my attention away from the battle hear.

 

[Waira]

:smoking:...better! yeah, I think they're out of the woods mate, new growth looks fine,... good catch and save! just make sure to keep a hawk-eye on that pH, as res' contents age,... and keep your pH metre clean, calibrated and properly stored ...doesn't take much to throw them outta wack, and they way the pH scale works (logarithmic) , even a few tenths is in fact a big change!

 

[Arjuna]

@Waira awww champion. Thanks a mill man. Don't know what I would be with out it ou gurus out there.
Happy smoking bro.