Fading too fast in flower

Almost all leaves turned completely yellow by now in about forth week of flower. Do I need to make nutrient solution stronger or add more nitrogen. I’m not sure why leaves got eaten by itself so fast. Buds themselves look very good n healthy n smell great. Water started out at 5.8 ph amd 1.5 EC. After a week though ph was down to 5 and EC was 2.5

By the sounds of it the soil’s ph needs to be reset. I suspect you are using coco given starting pH is 5.8. May be best to complete this support ticket
COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

-What strain, Seed bank, or bag seed (photo or auto)
-Age of plant
-Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
-Vessels: Type and capacity of container (fabric, plastic, etc)
-PH and TDS of Water, Solution of runoff (if Applicable)
-PPM/TDS or EC of nutrient solution if applicable
-Method used to measure PH and TDS
-Indoor or Outdoor if indoor, size of grow space
-Light system List brand and wattage/spectrum
-Actual wattage draw of lights
-Current Light Schedule
-Temps; Day, Night
-Humidity; Day, Night
-Ventilation system; Yes, No, Size
-AC, Humidifier, De-humidifier,
-Co2; Yes, No

If growing Hydro some additional questions:

-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution

Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.

I’m sorry should of said what kind of hydroponics. It’s aquaponics. It’s just an air stone in the water, general hydroponics bloom and some Hydrogaurd. Temps in the 70s. It’s cold here so water stays below that as floor is cold

U giving them any nitrogen?

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The bloom has N at a 5. It looks like as far as I can tell that it was just taking water n not nutes. Maybe that’s why EC went up as well as PH? So nutrient lock out caused it to feed on the leaves? It’s more of a what do I do now to fix the problem n how can I tell it’s fixed as leaves don’t get green again

Simple foliar spray something with nitrogen for it to eat