It be better just to get store water the only stuff you can do to tap water other then ro is a filter and or let it set out for 24h but all that will do is take out the odder or remove/ evap the chlorine
Its like driving a car blind only time be for this tank will crash once more.
Plz let us help you I see what can be a REALLY REALLY REALLY nice tank but you have got to let us help you and it will only work if you do it all not just a little of what we tell you
If I was you id do a 20L or a 10 wich ever will fit in the place of the char. And just fill it with 50 pounds of live rock put in a heater and a light over it no sand and let it cycle after it dose add a cuc and then plum the tank in to that and remove your old sump.
(Forget the name of this...
Id see abpit maby geting a few little small rocks (4 pounds) and let them cycle in a 5gal bucket of tank water change and add that to help with the life because if they set out for 4days they are now just concederd base rock
It may shoot your calcium way past 450ppm.
I was thinking it was like crushed coral.
Also what is chep you can get a 20 pound bag of dry sand frome petsmart for what 20$
O I was think you going for somthing like once a month. Id just recomend only doing a 1in sand bed tho so you can just keep the sand in the tank when you move it. If your talking about the cheep stands like frome death co the iron one's id not go with one i had a 20L seting on one a few months...
It can take a week it can take 3-4 weeks it is all base off the spikes which are made frome the die off. if its just a quick one tank to another kinda thing then you will probly have no die off at all and so most likley no cycle since it will allready be cycle stuff in the first place. But id...