Some one please help,clones nft

COULD SOMEONE PLEASE HAVE A LOOK AT THESE PLANTS I HAVE 8 AND 4 OF THEM ARE LIKE THIS CHECKOUT THE PICS ITS AN NFT HYDROPONIC SYSTEM WITH AN AIR STONE IN THE RESIVOUR AN OSOLATING FAN AND CARBON FILTER EXAUST ARE ON 24/7 MY LIGHT IS A 250WATT HPS ABOUT 30 INCHES ABOVE THE PLANTS ALL THE PLANTS ARE IN THE SAME SYSTEM SO Y IS THIS ONLY HAPPENING TO HALF OF THEM

PLEASE HELP ME AS I HAVE PUT A LOT OF TIME AND EFFORT INTO THIS GROW
ALSO ANY HINTS OR TIPS COULD U SEND THEM MY WAY FIRST TIME GROWER LIFETIME STONER (PEACE)

strain or bagseed? what nutes? how old are they, how long have they been growing. can you take a picture of the system?

Wats up KP2 the plants are clones
5 RECON,3 CHEESE they have been going now for 3 weeks 24/7 light. now 18/6 my nutes are sensi grow A+B from advanced nutrients here are some pics of my grow room and healthy plants also would u no if recon and cheese are (indica or satvia) i only feed every time i change my resivour between 7,10 days
thanks for the reply CHEERS

(PEACE)

are you feeding full strength? what do the roots look like? are you misting? if so, stop.

lets see the roots.

ph? tds?

you feed once a week! that seems way too little!

NewbieG said:

you feed once a week! that seems way too little!

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it's hydro. he changes the res once a week, which is fine. the plants are exposed to nutrients the whole time.

pump is on 24hours? or does it cycle off for cooling? what is your res temp?

get that stupid tin foil out from below ur plants, its causing hot spots..