i think i have nute burn but not for sure

hi, i have 2 trainwreck plants that are about 1 in half months old they are still in vegatation but i got some spidermites on them so i sprayed them with ferti-lome red spider & mite spray.I have been giving them alaska fish fertilizer 5-1-1 after i sprayed them with ferti-lome they looked a little weird so i gave them 2 tbs to 1 gallon of water of alaska kinda water them alot now my fan leaves have rust or copper looking spots on them and the colas leaves are drooping pretty bad.The cola leaves are also crling and turning black on the edges.I have flushed my plants with plain water. what should i do im afraid my plants are going to die can anybody tell me what the problem is? it almost seems to me like nute burn