Leaf Chlorosis

Greetings all!

Started some Strawberry Cough in Canna all mix.I have 3 vegging the last couple of weeks in a closet under 200 watt enviorlite.One is about 12 inchs the other 2 are about ten.Leaf chlorosis has set in on two kinda badly.I removed about 6 badly affected leaves and changed positioning of the fan.I have no vent I just keep the doors slightly open and check temp regulary stays between 25 to 27 with 40 to 55% humidity.I have got this each time i grow in closets but always manage to get a good crop even though the chlorosis seems bad at times.

I know I should have a vent but its just not viable at the moment.Any suggestions to halt or maybe stop it for next time.Oh yeh am using Bio Bloom nutrients.Am careful not to over feed.

Would really appreciate some help!

Peace an love K;)

You cant vent the hot air out , down through the floor?

take a quarter OZ and sell it to a friend. Then buy a blower!