4 ms·By going in this order, the sand does not go into the output.by zeckalpha 13y agoBy going in this order, the sand does not go into the output.Zikes 13y agoA bit of cloth at the bottom could help with that.voidlogic 13y agoThis, if you had a big enough filter you would both start and end with the large rocks and have the fine sand in the middle.