Freshwater?

Mussin · Sep 6, 2020

Filling up my setup with freshwater then adding salt. Can I put sand and dry rock in freshwater for a few days until I add salt? Ordered it online but want to start setting the rock work up today. I usually just add saltwater to a new build but with this much water volume I think it's easier this way. I was going to do my Rockwork add tap water, add stuff to remove chlorine and when my salt gets here add it and keep checking the salinity until I get to 1.026.

Reef. · Sep 6, 2020

Would be best if you mean tap water to say tap water rather than freshwater as it can get confusing.

If you do mean tap water I wouldn’t put rock in tap water, sand can be rinsed but I would expect rock could hold on to stuff in tap water you wouldn’t want in the tank.

I strongly recommend you go with rodi water.

virtual reality · Sep 6, 2020

At least test your tap water to see what is in it. But, I do have to agree with Reef.
Better if you used R.O. water

ScottR · Sep 6, 2020

What kind of tank are you going to keep? Reef tank? Tap water is almost out of question in most cases. Chloramines are only part of the problem. RO/DI is the safest as others pointed out. You can get away with tap with a fish only system with easy fish. Please share more about your set up and what you intend to keep.

ScottR · Sep 6, 2020

To add to this. I recommend doing your rock work first and add salt and water at the same time. There’s really no point in adding water without salt although it won’t hurt.

Mussin · Sep 6, 2020

I have a 75gpd rodi system in my basement, where my sump is. The sump is filled with rodi water but I have to fill up my 180 up stairs. It will be a mixed reef tank. This is the same WaY I did my 120. (used tap water initially) maybe I will wait to add all of my rock.. The main issue is there is no way to get the rodi water upstairs to fill my 180 unless I carry buckets but that's not happening. Lol