One month old clones.

I PH my water and nutrients to 6.5.
My foxfarm ocean forest is showing up around 8 on my soil ph meter. Under two 300 MarsLED. They are a month old clones. I water with distilled water then about 5 days later used fox farm grow big. About 5 days later I used botanicare cal-mag plus. And about 5 days later I used fox farm big bloom. And 5 days later just distilled water ph'd. Not sure if I'm ph locked and or if I'm low on other micro nutrients. The clones had some pre flowers when I got them and then they started dying off. And the regular fan leaves started yellowing on the tips and edges on the bottom of the plants. But then new growth started showing the yellow edges also.

What are you using to check soil pH? A pH of 8 sounds way too high. Fox Farm Ocean Forest is supposed to be buffered between 6.3 and 6.8. Good luck!

jnonymous said:

What are you using to check soil pH? A pH of 8 sounds way too high. Fox Farm Ocean Forest is supposed to be buffered between 6.3 and 6.8. Good luck!

Click to expand...

One of those PH, light, and moisture readers you stick in the ground.

PistilPeteX3 said:

One of those PH, light, and moisture readers you stick in the ground.

Click to expand...

Oftentimes those cheap soil pH meters are greatly inaccurate. Did you calibrate it when you bought it? Can it even be calibrated? I'm not sure I would trust the readout if not.

It's hard to say exactly what the problem is without having more details. Based on the information you've given, it almost sounds like you might be feeding them too much even though a lot of the yellowing looks very indicative of a deficiency (possibly due to pH-related nutrient lockout). FFOF is pretty hot soil to begin with and if you are feeding full strength nutes, you might be over-doing it. I suggest flushing with pure water (this should help in the case of lockout too) and only using distilled water pH'd around 6.5 for a few weeks to see if the new growth looks better. I've grown many times in FFOF before with NO added nutes and no problems.

Just my 2 cents!

Thank you @jnonymous

I think it was a combination of things.
I was using distilled water so I think it was lacking calcium and magnesium. I then over did it on regular fox farm nutes to correct the issues before realizing the cal-mag defiency. So I think it was a combo lack of cal-mag and too much nutes. So I flushed the plants with plain water. Tested the runoff and PH seemed good at 5.8. So I think the cheap soil PH meter had me thinking my PH was off. I also raised the LED's a few inches higher. I'm giving it 2-3 ml per gallon of cal-mag plus and they look a lot better. Only one Buddha Tahoe OG still has a lot of bleaching on the leaves and is probably safe to say not going to produce much. Thank you for replying and helping a guy just starting out again. Last time I grew was 20 years ago from bag seed using miracle grow and regular bulbs.