How do I correct symptoms of over nute in soil?

I used miracle grow soil for my test / first grow. Since I planted them, I have only used water on them without adding any more nutes. However, as my plant ages, it is showing signs of over fertilizing (small solid yellow tips on all leaves). Is there a fix or need for this or is the first step I should do is to take a PH test and adjust this first?

Thanks

Since I planted them, I have only used water on them without adding any more nutes. However, as my plant ages, it is showing signs of over fertilizing (small solid yellow tips on all leaves). Is there a fix or need for this or is the first step I should do is to take a PH test and adjust this first?

Those yellow tips don't always mean nute burn. symptoms

Since they've been fine, I really doubt it's the soil at this point. I use it all the time and it's never burned anything after seedling stage?
Believe it or not, it's damn near impossible to burn plants with their prill formula.

I was just in contact with MG (Scotts) today and they sent this in an e-mail.

"Miracle-Gro Moisture Control Potting Mix feeds for 3 months with Osmocote. Osmocote works on the principle of osmosis, which is how the product gets its name. Osmocote prills absorb moisture from the soil, causing them to swell into plump capsules of liquefied plant food. The nutrients are then slowly released through the prill's special coating to the plant's root zone through osmosis. This constant supply promotes beautiful plants. And since the nutrients are encapsulated, they will not wash away - no matter how much it rains or how often you water."

Right on fish
I'm going to keep truckin for now as is and just keep a mindful eye on them just in case. Everything else seems fine.

Glad to help. Best of harvests to ya!

right on....thanks again...if my 6 test bag seed plants survive to the point I can get them in my real grow room and if any turn out fem that I can get a harvest out of, I will be a happy camper