Hello all. First timer here...
The auto-girl below is 5 weeks from sprout. She's in a 32x32 tent, 600w LED averaging 30%-50% RH, 65-80 degrees, 18-6 veg. The soil already had nutes so I hadn't ever added anything until, after not being watered for 4 days, and in a hurry, I mixed 1.5 tsp Fox Farms Grow Big and poured 3/4 gallon before runoff accumulated in the saucer. 2 days later, this is what I have. I see brown (Burnt) leaf tips and some leaf curl.

Thoughts? Too much nutes? THX!
Looks like the nutrients are synthetic, time released. .07%-.04%-.03% Derived from ammonium nitrate, ammonium phosphate, etc. Also, processed forest products, compost, sphagnum peat moss, perlite and a wetting agent. I've been watering about every 3rd or 4th day. I'm not going to use it anymore since my FF Ocean Forest arrived!