Quote Originally Posted by nuglover
have another question. i have been running the system to work out issues and fix them seems i have got it running smoothly except it has a red and black grit. the red grit is super fine the black grit is very course. is this normal.
I'm assuming the grit is in your water.
If that's the case, the red grit is probably the fine clay coming off your hydroton. There is always a bit of that coming off, and even more if you didn't rinse the hydroton before you actually used it.
The black grit..... I have no idea.


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