Help pls - potassium silicate keeps turning hard when added to water in rez

Is there a way to stop this?

You need to mix it in first. Read this thread.https://www.rollitup.org/nutrients/657080-potassium-silicat-how-do-you.html

I added a pinch of potassium hydroxide to mine to stabilize it.

The other thing is to premix into a volume of pure water (RO or distilled or otherwise very low TDS) before combining with the Soup. cn