I've been seeing that exact same problems on the upper leaves, except it's more severe.

People are saying to flush them for a week. What's the best way to do that? Just put through 2-3x the container size in pure water once, or do it more than once?

If the plants goes a whole week without any added nutrients (just flushing), won't that cause other problems?
mcozzy1 Reviewed by mcozzy1 on . K OR Mg-> DEFICIENCY Hey Last night I gave the ladies some water with 3 drops of Cactus Plus (1gal)and some baking soda to bring the PH up... Well when I woke up I noticed some type of deficiency. I wasnt to sure at first but then I started to read some FAQs and came to a conclusion that it might be a little of the 2. I have 2 pics that I will include.. This had to be because of the baking soda I'm assuming because I read "Potassium - Too much sodium (Na) displaces K, causing a K deficiency. Sources of high Rating: 5