Is this cal mag overdose or deficiency????

Airwalker16 said:

Up your pH to above 6.

Click to expand...

HydoDan said:

PH is a bit low... 5.8-6.0

Click to expand...

The Dawg said:

View attachment 3825014

Click to expand...

Bubblin said:

There's a fair bit of iron in most cal-mag nutes, it can lock out manganese if there's too much.

For ph, imo anyway a ph of 5.5 is like the lowest you should go, might wanna let it drift up to 5.8-6.0. I like to let it fluctuate a little between 5.7-6.0.

For hydro.
View attachment 3825013

Click to expand...

Dumme said:

Why is this posted in LED lighting?

Click to expand...

insert username said:

Idk what is going on these rust spots showed up then I put some cal mag in the resivoir, thinking it was cal mag deficiency and it looks like it has gotten a bit worse since yesterday.

this is a dwc recirculation setup with a drip

Ph 5.56

Ppm 500.

Using gh flora trio at 3 or 4 ml of each part per gallon.

Topped up the reservoir a few days ago with a slighlty different mix , coz I was using directions on the bottle, changed to 15ml grow / 7.5ml micro and 2.5ml bloom

Only put in about 1/2 a gallon as a top up and I think it made things worse lolView attachment 3824835 View attachment 3824836

Click to expand...

Olive Drab Green said:

Makes sense. I'm clearly not a hydro guy, and in organics, pH is less of an issue. So this is educational for me as well. Sorry if it appears I'm hijacking.

Click to expand...

BecauseIgotHigh said:

thats calmag def there brother.
Mix 1ml/L in water bottle and spray your plants. Your plants will get better faster feeding by folair spray.
Mix into rez tank, takes about 2 days until you see plant health going back to green. 5.5ph is great. Let it drift to 6.2. I like mine to be about 5.6, I let it drift to 6 and bring it down. 5.8-6.2 for DWC. 5.8-6ph best.
cal-mag def occurs mainly in hydro. also make sure you add flower nutes at week 2 of flower. or add it in, or your plants will suffer from the nute change.

Click to expand...