Water Aeration

[Arthur]

I downgraded from 125 to 40 gal. I had 125 mixed reef tank for last 10 years so maybe my question sounds stupid. I consider myself experienced reefer after all those years but I have one question. I always mixed water for 2 changes. I used 55 gal of water and use it for 2 water changes. After using half of the water remaining was left for 3 weeks with our aeration. Then before another change I plugged pump 24 hours before change. I never experienced any problems but I know some keep saying that we should aerate water all the time. Im asking because now if I mixed my water it will seat for a lot longer since it will be enough for 3,4 water changes instead of only two like before. Do you think that will be a problem? Thanks.Art.
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[Irsug1]

If you keep a pump on, a month should fine.

 

[jrpark22000]

I have a pump in my new SW bucket on a timer. It operates 4 times a day for an hour or so. Otherwise the water starts to smell like dirty socks after a week or 2. I've used the dirty sock water before, but not knowing what causes the funky smell, it's worth the peice of mind to run the pump IMO.