is this a cal def?

flowering for one week under 400 watt hps.

any opinion?

Yer, mainly calcium deficiency shows purple stems as in this wicked chart where calcium deficiency is on the left and mag deficiency is on the right-
View attachment 1722058

I wouldnt say you had either but possible. What details can you give about the grow, ferts water pot siize and anything else. Peace

its at 6 gallon pot.using hesi nutes,revive and started some big bud today.water ro filtered with 6.8 ph.added dolomit lime 2-3 weeks ago top of the soil.but not sure working.also gave some epsom salt 3 days ago and keep giving it foliar for 2 days.dont know about the dirts..thanks for the answer

ı read that epsom salts can fix cal def also..is it?

No epsom salts dose not have any calcium in it, it is magnesium sulphate, no calcium involved so epsom salts cannot cure a calcium deficiency only a magnesium deficiency. Dosen't the revive have a decent amount of cal/mag in it? Thoght it could cure cal/mag deficiencies but cant quite remember its full ingredients.

Still i didnt think you had a cal/mag deficiency judging by those pictures above. Peace

Looks more like mites too me......actually pretty certain you have spidermites.......cause thats not a cal or mg issue......

Yer in a way but didnt want to say, if it is mites/thrips or somthinng else pest like it looks bad already. Peace

If nor maybe consider some trace elements. Peace

Its pretty obvious its mite damage........its not thrips. Mite damage and thrip damage are quite different looking.

Be easy to check for mites, should be plenty about on those leaves. Peace

sorry for late reply kingrow..revive has %1 nitrogen %1 calcium %0.5 magnesium %0.3 chelated iron used it for a while ı guess helping but not fixing any major problems.had mite issues at veg..using neem oil for it.ı thought send away mites.no black dots under the leaf or anywhere now.but ı dont know much about any other insects if its.also leaves start to got more droopy today.dying slowly ı think.

Yer revive is good but if you not got cal/mag or iron deficiency it is not needed generally although shouldnt do any harm in small amounts.

Plants probably look good except the mite damage then. Peace