Very Tips of leaves yellow???

I am in my 7th week of flowering and almost all the leaves on the plant have yellow tips...The entire plant looks healthy as can be...dark green leaves, lots of buds, and loaded with trichomes. I have a 175 watt metal halide light about 12-16 inches above it and a heater that automatically comes on to keep temps around 80F. Also have a (2) 40 watt flourecsent bulbs for side lighting. Water once to twice a week with my fertz...I have read that it could be K deficiency. Anyone with experience or knowledge have any tips? I can put some pics up if needed...

Dark green and yellow tips at 7 weeks, nitrogen overdose maybe? Pics would be a bit useful.

Yellow tips (that later turn brown) are typically from nute burn. . .

Too much fertilizer.

Yep, the above would be my guess as well.. Back off the nute strength just a little.

http://www.marijuanapassion.com/forum/showthread.php?t=54233
refer to the chart for some help.

you want just the tips or ends to burn...that means your doin it right.....

not to much... not to little fert...I use 1/3 of what the directions say to use everytime I water

Here are a few pictures.

you have no issues....nice looking plant

Beautiful plants you all; Unsulphured Blackstrap Molasses makes for a great foliar spray; it has a ton of minerals.

Hey colonuggs, That is a beautiful plant...Sweet. So I shouldn't change anything? Distance of light? Temp?

that shit looks good to me......you have a month or so left from the looks.... that top is gunna be a phat/fat cola

Goodshit...that's what I wanna hear. I would be happy if I come out with an ounce. Whatcha think? Anybody wanna makes some guesses on how much it will yield?