PPM

guitarguy10

Well-Known Member
Don't ever run plain water through coco, it will leech the Calcium and Magnesium off of the cocos' cation exchange sites which have a higher affinity for Potassium and Sodium and will be displaced by those ions.

Always run a low ppm nutrient solution if you are going to flush anything in coco.

Bluelabs truncheon is probably the biggest tool I have lol. It is definitely highly overpriced for what it does ($10 parts to measure electrical conductivity of a fluid). But mine has lasted like 20 years so it has more or less paid for itself. In any case if you are growing in coco it would be wise to have an EC meter of some sort.
 

bernie344

Well-Known Member
Hey guys, I just read PPM is important to nutrients plants.

My Amnesia Haze is currently on 8th week flowering in a 6 gallon pot in coco x perlite.
I tested the runoff for PPM, it came out at 450PPM.
As I read, that reading is too low. I should be having at least 1000 PPM, is that true?

If so, how do I increase the PPM?
I have already dumped quite a lot of nutes into my water and yet the PPM is still at 480 only.

My plants recently had a nute burn so I flushed it about a week ago and the browning on the leaves stopped. But my leaves are now turning purple too. I keep temps lowest at 21 Celsius.

This PPM stuff is confusing AF. I need layman explanations. I need solutions to fix my PPM without dumpin in more nutes. Not only is it not cheap but I don’t want my plants to get nute burn again. Please help.
Its all about the PPM and PH.
Add as much nuits you need to reach the required PPM then PH it.

Too high PPM can hurt plants and kill them over time.

Too low PPM will limit growth and harvest.

Feed charts are only useful for % of different nuits, PPM and PH is the most important.
 
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