What is this?

[Caleb Calebson]

This starting to show up on one of my moby dick xxl which are around day 50. The tipping is from koolbloom, I pulled back on it a bit.

3 gallon happy frog
5 grams maxibloom per gallon
1/2 tsp koolbloom per gallon
Ph 6.5 always
Feeding cal mag randomly @ 1 tsp per gallon

 

[Proph]

What you are seeing is a combination of multiple issues caused by over feeding/excess nutrients. You need to get you feeds in the proper ppm/ec range. You need to check the ppms/ec of some run off water and possibly flush that soil down to a reasonable ppm level. You should be checking your plants daily and looking for signs of leaf changes. This has been going on for a while. At this point you can only try to stop the issues from spreading to the healthy leaves that are left.

 

[Caleb Calebson]

I suppose I'll just flush her then

 

[Proph]

I suppose I'll just flush her then

How will you know when to stop flushing? Unfortunately, there are no shortcuts in growing. You will eventually need a ppm/ec meter. It's the only way to know if you need to flush, and when to stop flushing... I wouldn't do it just to do it... You also need to know the strength of your feeds. What good is flushing of you're still going to use a nutrient mix that's still too strong?