Hi Guys Been reading this forum for a while and finally made the move into growing my own produce. Fond out allot from reading, but would love it if i could get some pointers along the way. The green cab is 2,5 foot wide, 3 foot high and 1.5 deep. The cab has a 250 watt hps. Three fans one on the plants, one on the light, and one out take 12inch fan. There is one smallish intake so another will have to be cut soon. Have two clones which both look ok, had three but unfortunately one did not root. one is very happy but one has browning on the tip of all the new leafs. Any help on what this could be would be very helpful. They are being watered with tap water and a ph tester is on its way but has not arrived this could be the problem with the leafs (wrong ph), or maybe the stress of being moved under a HPS. The temperatures in the box are around 30 degrees c, or for the americans around 85 f. Any comment on the setup and the leaf would be most handy. i am planing on completing this journal to the end. I will post picture in an hour, as need to study. And i would like to say thanks in advice for any help gc.