Leaf with red spot problems. Please Help.

[Aqua Man]

So in that 1.5 gal you need to raise the ppm by 80 of the entire system.

So if you have say 10gal system and you need to raise that 10gal by 80ppm with a 1.5 gal add back.

So 10/1.5 = 6.6

So 6.6x80ppm = 528ppm in 1.5 gal to get ya back there.... or about a 50% mix

Does that makes sense?

I forgot to add that you add the desired ppm to the final number.

Here is the link.

DWC, RDWC and RECIRCULATING SYSYEM TOP UP EXPLAINED.

Ok I'm going to explain a more complex way of maintaining our systems for those looking to use best practices (IMO only) There are many ways this can be done but I feel this gives the most stability for PH, PPM, NUTRIENT RATIOS (super important) especially is systems with a low water volume. So...

www.thcfarmer.com