6 weeks of veg burnt tips and canoeing of older fan leaves. New growth looks healthy.

[growwiz420]

Not a heat issue temps stay at 76 constant lights on and 65 when off. Humidity is 50-60% no lower no higher. Was using distilled water was told it may have causeda calcium deficiency so i went back to well water. Ph is 6.2-6.5 just started giving nutes a week ago. What should i do for calcium def. My well water is hard so wouldnt it have higher calcium levels? My other girl is fine started a few leaves canoeing on her and it went away nothing like the other. Both indica healthy one is NL other is Blue Dream. Thanks in advance. Took first sets of big fan leaves off to see of it would speed up growth. Using a kind L.e.d l300 240w. Has 90 3w diodes uv a uv b and infared. Placed 24" above tops with no streching at all light is pretty intense could it be too much the plant?

[Natterser]

Hi. I would use distilled water. Are you sure that it is better to use well water for plant?
However it looks good, I guess you are on the right track.

[ganjagunman]

Burnt tips is usually nute burn

Canoeing is usually heat stress

Need some pics with lights off mate.