Quote Originally Posted by Rusty Trichome
That is typically an out-of-range ph indicator, not nitrogen def.


Too low for a soil grow. Ph best kept between 6.3 and 6.8 for a soil grow. Which sunshine mix? (there's a dozen or so, isn't there?) Some of their mixes have a nororiously low ph.


You can overdo CalMag, and using at full strength is a waste, unless plant is fully-developed and healthy enough to make use of the overabundance of calcium and magnesium.


Why...tapwater no good? (just curious)

I am growing in SunShine#4 which is soiless, so I keep my pH according to what you are supposed to with Soil-less mixes, 5.7-6.2

SunShine is *Not* soil.

Not over-doing the CalMag, I agree the full strength is an absolute, I do about 20% of what is recommended and have had no problems in the past.

So, none of you have any ideas eh? My pH stick works fine... they really don't look super happy...

I use r\o because my tap water comes out at like 350 PPM and I figured r\o would be better though I haven't really noticed much of a difference.