Originally Posted by itsonlybarney
Byron, having seen the information from our water supplier, what sort of value should I be looking for in terms of dGH.
I did the test but the change in colours from "red via brown to green" is very subtle. The red is more pinkish, and the green is rather light. Assuming those colours are correct I got a dGH of 9-10. Is that what I should be expecting? Or have I picked up a dud kit?
Is tghis the API GH kit, or the Sera? I've not used the Sera; the colours on my API GH kit are orange to green, and it took me a while to fathom the changes.
GH is at 3 dGH or close, so that is very soft. Looking at your fish list, this is perfect for the soft water fish which is everything except the platy, they will struggle. I would either return these, or separate them into another tank and increase the GH for them.
Plants should be fine, though 4 dGH is usually mentioned as the minimum. This is due to calcium, essential to plants. But rather than fuss over this now, I would leave the GH and see how things go. If the plants start to show signs of calcium deficiency, we can discuss options.