Coco coir runoff PH 4.3 - 4.5 ??

Water has always been PH'd to 6.0 , and the runoff used to be 6.0.

However didn't check the runoff for a while and now the runoff ph is between 4.3 and 4.5.

The coco was flushed with many gallons of clean fresh ph'd water , and still the runoff ph stays at 4.5 !!


Is there a serious nutrient buildup or something going on here?

The coco was always flushed on the third watering - so i didnt think there would be a nute problem - even though the plants are showing nute lock problems , hence re-checking the runoff ph.


Any ideas?

Hey I'd post this question on the permanent thread called coco growers unite, its under the indoor growing tab. Their are alot of really experienced growers on their that saved my grow. While its not a permanent solution perhaps a foliar feed will help while your coco solutions are being figured out. I'd also add pics of your plants to get a more accurate response, as it isn't really clear what is making you think their is nute lockout. Good luck