The Planted Tank Forum banner

Water Change Aeration

2729 Views 8 Replies 5 Participants Last post by  jellopuddinpop
Hello everybody.

I'm relatively new to being serious about the hobby of fishkeeping. I searched this forum, and the wise God google with only some topics brushing on my question. So I turn to you glorious gurus!

My question is, when I am doing 20-30% water changes in my 20 gallon H tank, with a PH of around 6.8, should I aerate the water while it sits before I add it to my tank?

I saw a lot of information for aeration regarding salt water, but not about freshwater. I currently have a heavily planted tank with no CO2 yet (I'm still waiting on my diffuser to arrive). I read that too much movement of the water may "push" the CO2 out of the water. But when I do a water change, I immediately fill the bucket, treat it with prime and then let it sit for about 3 days (right now as the tank is still relatively new) before I do my next water change.

I have a small heater that I put in the bucket to keep the water around the same temperature as my tank, but it has no movement while it sits. I do cover the bucket (with my "dirty water bucket") because any open water source in my house is free game for drinking water and pet hair.

There are currently 5 harlequin rasboras and a snail in the tank. Eventually it will house 5 panda cories, my betta, 10 rasboras a mystery snail or two and a small colony of shrimp.

So moving forward with the maturing of the tank, should I begin aerating the water change water? Or is what I'm doing ok to let it sit covered, treated with prime and a small heater.
1 - 1 of 1 Posts

· Premium Member
2,129 Posts
It's not water movement that causes CO2 to dissipate from water, it's when the water surface is broken, like by waves or aeration.

I'm curious, why do you leave your water sit for 3 days?
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.