Let's talk about a 24/7 continuous drip water change

[Triggreef]

It is:

"Need to have a way for water to exit the system also to avoid the obvious problem of overflowing your system."

I personally used the same pump (dual head). Not sure what the OP uses.

I have an overflow outlet at the top of my sump so no matter what it can never overflow. I pump in the new water in to the sump past where that overflow is located so any water exiting the system has already gone through the entire system at least once.

Also anytime i do actual maintenence and vacuum out Detritis etc I have about 60g I can remove and just leave it running this way. Then it can refill on its own for a few days.

 

[CHSUB]

Yes i guess just more constant. As stated I mix slightly lower to account for evap and this has not been an issue at all.

Yes, I understand; might be a little tricky some times with different rates of evaporation? I ran a 10 gal daily WC on a 360 gal system which took 6 hours to complete. However, still used a full reef system including: calcium reactor, sulfur deNO3, skimmer, etc. If your reef is fully stocked, imo more than WC is needed?

 

[Randy Holmes-Farley]

I have an overflow outlet at the top of my sump so no matter what it can never overflow. I pump in the new water in to the sump past where that overflow is located so any water exiting the system has already gone through the entire system at least once.

Also anytime i do actual maintenence and vacuum out Detritis etc I have about 60g I can remove and just leave it running this way. Then it can refill on its own for a few days.

Ok, I understand. I would not pick to do it this way as opposed to dual pumps, but with monitoring and adjusting salinity as needed, I can see it working fine.

 

[twentyleagues]

I have an overflow in my sump directly to outside. I mix my new water slightly lower to account for evap. No real science behind it just guesstimate on this aspect by trial and error.

Well that explains it. Nice! I had an overflow in my settling chamber that led right to my basement sump, an electric sprinkler valve and a pvc pipe with an emitter allowed about 40g of freshwater into the system sump which was the last place before going to the tanks upstairs. Kept a couple heavy stocked tanks with messy eaters almost nitrate free. I think quite a bit of filtration was done in the bog filter also but basically kept me from having to do much other then clean the glass, trim some plants and open a valve at the bottom of the settling chamber every two weeks.