Question on constant water change.

[Pseudo69]

I am running a Cardiff 24g SPS and I was thinking about doing a canstant water change of 1g per day via a dosing pump setup. Is that too much of a water change and would that affect stability? The tank is fully stocked and only has 4 fish.

Water is free and salt is cheap. I can maintain Ca and alk with the dosing system also which would be less dosing of 2 part.

Thanks

 

[Chaotic Reefer4u]

Pseudo 69
Your good to go! and your corals will love you for it! hope this helps!

 

[Pseudo69]

Good news. Thanks

 

[Pallobi]

I am also considering this with two 1.1 mL dosing pumps on the same timer...

I'm curious if anyone else has any more thoughts on this as well...

 

[Aimforever]

I am running a Cardiff 24g SPS and I was thinking about doing a canstant water change of 1g per day via a dosing pump setup. Is that too much of a water change and would that affect stability? The tank is fully stocked and only has 4 fish.

Water is free and salt is cheap. I can maintain Ca and alk with the dosing system also which would be less dosing of 2 part.

Thanks

Check out this article. It will help you figure out how much you need to change daily. Basically, to control nutrients, all you really need is a 1% daily water change. However for Ca & Alk it is a different story. If you have a ton of SPS you may have to change as much as 50% daily to maintain Ca & Alk, so your system demands will dictate if this would work for you or not.

I personally dose 2 part and do 1% continuous WC and have had excellent results.

http://reefkeeping.com/issues/2005-10/rhf/index.php#13

I am also considering this with two 1.1 mL dosing pumps on the same timer...

I'm curious if anyone else has any more thoughts on this as well...

For this to work properly it is critical that the pumps add and remove precisely the same volume of water otherwise your salinity will slowly drift. The common 1.1 mL dosing pumps are not precise enough to acheive this. To make the setup as simple as possible, try to find a pump setup that can be calibrated very precisely otherwise you'll have headaches chasing your drifting salinity. From experience, the simplification is worth the added cost.

 

[REEF SMAC]

I personally dose 2 part and do 1% continuous WC and have had excellent results.

This sounds awesome. I would imagine it does work well.

FWIW the local public aquarium here uses continuous WCs to maintain the parameters in its SPS tanks. Seems to work pretty well.

If I had a seawater intake, I would too.

 

[jjk82901]

You could use the dosing pump to pull water from the aquarium and use an auto top off float to add the new water. You would have to use a timer to turn off the salt ATO when not performing the water exchange and another timer to turn off the RO ATO while doing the WC or you would be delivering a mix of salt and ro throughout the day. Really a simple operation with an Apex or reefkeeper though.