Problem with top of plant...PICS INCLUDED

Does anyone have any suggestions as what the problem could be.
growing in fox farm ocean forest under 400 watt hps.Just started flowering a week ago after 5 weeks veg and top of plant is turning yellow or lime green color.I have the whole bmo nutes line-up.It has been feed 1 tbs super plant tonic twice [ every other watering ] and 1\2 tbs grow it green and 1 tsp flower power.Ph is 6.5 using bottled R.O water from grocery store,thanks in advance for your help.

cwl2008 said:

Does anyone have any suggestions as what the problem could be.
growing in fox farm ocean forest under 400 watt hps.Just started flowering a week ago after 5 weeks veg and top of plant is turning yellow or lime green color.I have the whole bmo nutes line-up.It has been feed 1 tbs super plant tonic twice [ every other watering ] and 1\2 tbs grow it green and 1 tsp flower power.Ph is 6.5 using bottled R.O water from grocery store,thanks in advance for your help.

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to be honest thats usually a sign of trich about to take action, but i dont see any pistil or bud action so do this number 1 put ya plant is 24-36 hr os darkness and then put it on 12/12 that usually starts budding action i got pistils in 3 days after doing that also, you said twice every other feeding as in every other week or what ?. and r.o water is good to a point but you need additives all the time sorry to bust ya bubble ( go find har water nutes so then you dont got to do shit and go to advanced nutes and find or buy bud x and perfect ph it always makes your water perfect from shit water to swamp water its always perfect. that should do it and rep the king when you get a chance.

Its turning light green maybe yellow not just the normal lighter green of new growth.

The plant has numerous pistils on it already and it really looked pretty good until I change the light to 12/12.

I use the bottled grocery store water because my well water has alot of iron in it.So if I foliar spray with my well water could this help if its an iron problem?Thanks guys for your quick responses.

I also have some bmo foliar harmony will this help if its an iron def. instead of the rusty well water.

Ok I sprayed it real good last night with rusty well water right before lights out.Checked on them in the morning and seems to look the same.Should I continue foliar spaying with the rust water?