miracle grow soil burning seedlings?

I have been using miracle grow soil for a while and at the beggining my leaves where turning yellow. Eventually turning brown and not heeling. Well they are about a month now and just one plant looks affected, still with each new pair of leaves turning a little yellow on the edges of the newly formed leaves. Is this a sign of the soil or the Ph?I don't have a ph tester yet so i was just wondering what it is. i have cfl's 2-3inches from the plant and they were putting out a little heat so i stuck my fan in there but some leaves are looking a little better.

MG soil can create ALOt of probs with most strains, altho it will work fine with some.
You will read all over the web about how Mg sucks, and it is true to a point.
Mg soil is not great, as a rule for young plants as it tends to be too 'hot'.

Try flushing the hell out of the soil, and then see if the problem persists.
Every time i've used MG,even for my garden plants, its been too rich in nutes and has stunted or burned the crap outta whatever was in it.
And yes the PH of the Mg soil has always been all over the place...Generally too low.
Try to get a PH tester, even if its a basic aquarium type tester available at most garden stores it will help you for now.

Soil will tend to act as a buffer for PH,which helps alleviate problems but some composts,like MG have sooo many nutes that are sometimes not mixed properly(resulting in pockets of V HOT soil) that the soil doesnt buffer properly.

Your CFLs need to be a lil closer bro, 1-2" max, put the fan on the canopy of the plants to carry heat away from the hotspot from the lights.
Could just be that your plants were heat stressed and not actually nute burnt.
Like i said, flush, move the fans over the canopy an see how they get on..

Alright i give that a shot and get back to ya thanx man

yeah what he said haha.

I have recently departed from MG moisture control myself after having constant problems my first few grows. Flushing it never seemed to help me, I tried...ALOT. My new stuff looks better then anything i ever had in MG soil. Seems that some people have great results with it but not me, could be strain specific but i have a feeling it has to do with how you water. I always watered till i saw a good amount of runoff, I'm thinking the people who do well are probably more conservative with the water and that keeps it from releasing to much of the time release nutes at once. Just a theory i never tested it.

I had to drive 100 mile to find fox farm ocean forrest, added perlite, coco coir and promix and so far the results are incredible, Dark green, frosty nugs. I'm sure you could work it out with the MG but i gave up and bought the good stuff, never going back.

Good luck
P@ssw0rd

are you just feeding with straight water, or a nutrient mix? I have been using MG organic potting mix, and watering with a General Hydroponics Flora 3-part nute mix and the recommended dosage for the plants age. I have grown over 200 plants with this method (Blueberry, White Widow, Cheese, Skunk #1, Big Bang) and have not seen any yellowing at the early stages of growth, only when the plant is done and ready for harvest. I use 6" square pots, and feed with 1 cup of nute mix a day, enough to moisten the soil and let the excess drain, root growth is amazing and requires moving to a 8 or 10" pot or larger when flowering begins.