[quote=KevinK;583849]this is in deed the thing, puting new in, and then having to take it out again.

rinsing the existing and putting it back, might also post som risk.

when removing it, I can isolate the tank and take it all out, no mix with the tank[/

I'm going sand shopping next week..:mrgreen:

in case I go for rinsing (i will do some more reading) do we from VIc have to worry about using our tap water, ore would I havve to make 200gal of RO/DI water to rins it out

Tap water is fine for rinsing.. Rinse really good tho.. Remember that fresh water is killing everything in the sand.. I still would let it cycle for a while to get rid of all the trapped stuff you just made dead with freshwater.. I wonder if your going to use it immediately if it would be better rinsing in saltwater as not to kill everything?

I could in fact put it in a 45 gal drum after rinsing, put a pump on it and heater (even rins it wit salt water),

run it for 2 weeks while stirring it dayly and maybe even refreshing the water in it each 2 ore 3 days to get as much dead stuf out before introducing it back in the new frag tank ( and I can do the introduction in a gallon eacg few days, covering my bsck several ways

so the solution is:

at can. tire and home dep. thy sell the plastic organiser towers with draws

the draws are 14 inches and 7 inches tall, holding 3.5 gallons

it fits exactly 5 draws beside each other in my frag tank.

each draw will hold a DSB of the 7 inches (3.5 gal x 5 = 17.5 gallon of substrate

fingers X that we sell the house in 2 ore 3 months, I can gust take the draws out of my frag tank, and move them wherever I need to, without disturbing the DSB, as i can gust put them back in a sump ore other frag tank.

this way i can put a new DSB in my tank at this time, and don't have to worry about having to disturb the sanded again when we move