Leaf issues??

Can anyone help me determine the cause of this? Using clean spring water from up the road. PH 5.9 and about 200 ppm .PH is stable between 5.8 and 6.2. Running a flood and drain set up using general Hydroponics trio as well as 1/2 strength cali magic and hydroguard. 2-600 W high-pressure sodium/ MH hoods.

how often do you feed? What temp is the rez water? what temp is the medium ? Does the water pool at the bottom? Does the medium ever dry out? My first thought is soggy feet.

I have the timer set to feed every four hours so six times a day. Reservoir temp is a steady 67°. Room temp is 74° so I'm assuming my roots would also hold the same temperature in the clay pebbles. I started digging around just now in the hydra ton to see if there was any standing water and the way I have my Table angled almost all the water drains out. There's a tiny spot in the corner that holds about a 16th of an inch of water that's all. top of the medium is always dry but underneath that it stays moist between waterings not soaked but just moist.

so what do the roots look like? Water roots ? Fuzzy roots? Pure white? Brown bits?

Besides a little nutrient staying there looking good… White and hairy. I'll take a couple pics in a bit for reference. But all in all they look pretty damn good

Then I think the light might be too much for them. Download a LUX meter on your phone and tell me what the reading is

Stebbins said:

Can anyone help me determine the cause of this? Using clean spring water from up the road. PH 5.9 and about 200 ppm .PH is stable between 5.8 and 6.2. Running a flood and drain set up using general Hydroponics trio as well as 1/2 strength cali magic and hydroguard. 2-600 W high-pressure sodium/ MH hoods.

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How long have you been under 2 600's? Is it possible its floro burn?

Getting a reading of 60-75k lux depending on where on canopy I am. Been under 600's for 3 weeks now.

70K is perfect for a fully developed flowering plant with c02 running optimally. I think you should back your lights off to say 50-55K and once you have flipped and they have really started to take off you can move the light down to 70K.

A tip that most farmers forget is that you will lose 25% of yield if you are 50% deficient but you will lose 50% if you are 25% over. So if you error do so on the side of caution.

Thank you for the advice. I will raise em right away. I'll check back in a week and let you know if it clears up.