I think what they were talking about is based off of the type of overflow you have. Theoretically, if you use an overflow on the setup, you could potentially lose a bit of the new water as it mixes, but to me, it's basically negligible in a big tank like a 180.
I say you should reclaim the water I was told about this not too long ago. You don;t have to do water changes just clean the water thats already in there by doing it.
Reclaiming water is fairly simple. The expense is set up, but then you end up saving money in salt in the long run. When you take your water out (whether it's gravel vac'd nasty water or just pulling water out of the tank), put it into a holding container of some kind. Use a small pump to pull water from the bottom and return it ot the top. On the pipe going back to the top, run a small bypass and venturi. Use the venturi to inject ozone (small units you can get from Aquatic Eco will do). Run the ORP up to over 450mV (I usually run them over 500mV) for 48 hours. You'll have 100% sterile and clean water to start over with next time you do a water change. Before you use it, just turn down the ozone and let the mV level drop below 400 so it's fish/shark safe.
This is a PM from zoo diver about it. Zoo Diver sorry if you didn't want this posted Ill have it removed if so.
I say you should reclaim the water I was told about this not too long ago. You don;t have to do water changes just clean the water thats already in there by doing it.
Reclaiming water is fairly simple. The expense is set up, but then you end up saving money in salt in the long run. When you take your water out (whether it's gravel vac'd nasty water or just pulling water out of the tank), put it into a holding container of some kind. Use a small pump to pull water from the bottom and return it ot the top. On the pipe going back to the top, run a small bypass and venturi. Use the venturi to inject ozone (small units you can get from Aquatic Eco will do). Run the ORP up to over 450mV (I usually run them over 500mV) for 48 hours. You'll have 100% sterile and clean water to start over with next time you do a water change. Before you use it, just turn down the ozone and let the mV level drop below 400 so it's fish/shark safe.
This is a PM from zoo diver about it. Zoo Diver sorry if you didn't want this posted Ill have it removed if so.
it probably would work but, decent ozone,just to clean my water change water , would cost 500. id have to find a place to store 200gallons if not more. and the cost of a pump and running ozone it would be cheaper for me just to use the water.
