First grow!!

Here are pics of:the setup, fertilizer, nutrient burn?, light, shitty temp/humidity gauge

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First il give you a little history about this grow so far. I bought a qp of some really dank white russian(great body high) supposedly shipped from BC. Unfortunatly this batch wasnt grown properly and was full of seeds(got at a good price in I germinated 9 in a paper towel for about 4-7 days and planted them into some standard miracle grow potting mix(day 1).

From this stage they were held in a aluminum foil lined box with 2 CFL's for about 3 weeks on 18-6 cycle. About 2 weeks into this i bought a used 400w Metal Halide and put the plants under that along with some A+B DNF early growth formula and some hardware store brand nitrogen(all bought off previous grower). The next week(week3) i went out to get panda film for walls and real soil. At the little hydro shop in town i purchased a bail of pro-mix equivalent(forget brand name) already containing 20% Vermiculite from which i added 30% Perlite to the mix as well and mixed it all in 4-5 gallon pots. From this point i began feeding the plants 1tsp of both A and B per gallon(recomended dose).

After about 2 waterings the plants were in good shape until i decided to add some extra nitrogen(about 2tsp as read on bottle(this step was recomended by the guy i bought it from)) and i think this is where i went wrong. 2-3 days later a few plants showed what looked like nutrient burn on the leaves from what ive learned. Also The small leaves developping towards the bottom of some platns are curled in and yellow which im guessing is also over fertilization. The next day i flushed all the plants with tap water. I then gave em straight water for about 2 watering and now im about to start giving them more nutrients but im still unsure. It is now day 32 i believe since the germinated seeds were planted.

I also plan on purchasing a PH and EC meter in a day or two.

***The water is left in the grow room so chlorine and such evaporates, but its always fairly cold to the touch, could the cold water be affecting the plants in a negative way and could this mean that i need a warmer grow space

Another thing i noticed today one or two little flies buzzing around, but this should be fixed when the grow room is fully put toghether and light proof for flowering

Should I start with a lower the concentration(1/2 tsp?) of fertilizer or stop alltoghether for now?

Is there anything else you recomend me buying for this grow or in general, ie. worm castings, dolomite lime, flowering fertilizer?

Im also planning on germinating another 9 tonight and they should hopefully be planted in about a week in some proper soil and grow conditions from the beggining im new to all of this but have spent many hours reseaching and any help/tips/criticism would be veryyyy apreciated!

Here are pics of:the setup, fertilizer, nutrient burn?, light, shitty temp/humidity gauge
 

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