Hi there, I just did a new tank with eco complete as a substrate, now as I poured water into the tank for the first time the water got all cloudy and stayed that way for about three days.

Now there is a residual silt in the tank, should I leave this silt and let the plants take care of it, or should I siphon it off?As I think this might be harmful for the fished especially cories etc.

I used the same stuff for my tank and dealt with the same silt when it was just getting started. With time that silt settles into the larger substrate and the rest is filtered out. I haven't had any issues with it.

leave it there it will work its way down and you will not see it. Eco is really all different sizes just give it time and it will be all good the sand on the bottom to larger on top.

It won't do any harm to your fish.

Fish in the wild are used to non-pristine water conditions in terms of murkiness.

You can leave it and eventually it'll settle down.
If you don't like it, then you can get a lot of filter floss into your filter and that should take care of it in a few days. Or do a large water change to get rid of it.

I second that. After having Eco for a couple of years, all of the fine stuff has worked its way uner the course stuff.

You can actually speed up the settling process a little by "gently" working the substrate with your fingers. I was able to do this without creating a cloud when I mixed Eco Complete into an existing gravel substrate. The key is slowly and gently.

Mike