Just fed (dumped?) a bag of this into my new 26 gallon which I am no fish cycling and boy what a mess! I now surmise that adding sand after tank is filled is the wrong sequence! It's been about 4 hours since i added it ... Only improving just a bit. The package came with some water clarifier but I'm concerned to use it given the cycle I am attempting. Anyone know how long before this sand will settle? Thx