Problem with new growth

[daihashi]

It's hard to say now because you've used epsom salt but it appears that you have nutrient lockout of some sort.

1. Either your pot is too small and you're rootbound really badly.
2. Your soil ph may be 6.5 and water may be 5.0 but what is your soil runoff ph. That's what we really need to know. The reason why I say this is because it looked like you either had a ph problem or a deficiency.
3. How much did RO did you flush with? Did you add calcium or magnesium? This is important especially after doing a flush.

I'm going with either PH or rootbound on this one, but it's hard to say on this one because you may also be suffering lockout due to the epsom salt.

[cheapsunglasses]

I thought that these nutes had Ca/Mg? I have to check that. I used about 1 1/2 gal. RO to flush each plant with. They are in 10 X 10 pots. I will test the run off. To do this correctly, should I pure more RO through and collect the first runoff drainage and test?
Just popped the worst one out to check out the roots. They are a little bound not to bad though. I'll put in larger pots tomorrow. Bad thing is I have to use the Organic MG again. Anything I can do to add to this soil besides perlite? Lime?

[daihashi]

Just go through your normal watering routine. Same type of water you normally use but water until you're able to get about 2oz or so out of the bottom of the pot (that's what I use as measurement) and stick a ph pen in there.

I would just add a decent amount of perlite to your soil (20-30%) makes flushing your soil easier when you have to. Also means you get to use less MG soil :thumbsup:

let us know your soil runoff ph.

[cheapsunglasses]

Well I put them in 12X12 pots. gave them plain RO to start. If I wanted to give them a little more CalMag down the road, like others suggested what route should I take? Lime? I will do a water run off test next watering.

[Mr. Clandestine]

Well I put them in 12X12 pots. gave them plain RO to start. If I wanted to give them a little more CalMag down the road, like others suggested what route should I take? Lime? I will do a water run off test next watering.

There's a product called Calmag Plus, and I've heard a lot of people say they really like the Botanicare line... though you can probably find one from another manufacturer that's practically the same product. If you've mentioned it before I apologize, but is there any reason you can't use your tap water? Tap water generally contains enough usable calcium and magnesium where you wouldn't need the extra supplements.

I wouldn't add lime unless you're needing to adjust pH. I don't know much about Miracle Grow soil, but I imagine lime may already be a part of the mix to act as a pH buffer.