One of the neatest builds I have ever seen. Looks nice!
Few questions:
- Curious what you have done to facilitate easy "push-button" water change, top-off and skimmer cleaning...
- Provisioning for future Calcium reactor and chiller hook up?
- How do you remove and replace the heaters? Not clear in pictures what the water level will be and if part of heaters will be exposed to air, possibly crack?
- How will the pumps be removed and serviced? Any way to add a backup pump inline, and auto-switch upon failure?
Mimosa,
We have done many water change systems in the past. We usually have a number of gallons we want to shoot for in our heads, and then we make the sump have a chamber that big. It works best when you shut down the main pump and let the tank drain down. Then close one valve/open another and switch the pump back on and now your pumping saltwater into your sewer/septic system. When you hit your targeted gallons, shut the pump off, and switch your valves to pumping back to tank. You will have a container with the right amount of saltwater mixed, and it is usually mounted higher than the sump so it can gravity feed back into your system. That is about as push button as it gets.
Ca reactors are going by the wayside with the dosing systems that are out there today, but in the past we just plumbed a compression fitting into the main pump return line, and your were good to go. Same with chillers, usually they are plumbed into the main return. But with the LED lighting, and the super energy efficient pumps that don't throw heat like the direct drive pumps do, chillers are a last resort. We design systems that don't need them. Each system is different, though.
The sump in this thread is very complex in design, lots going on. The heaters are sticking out of the Refugium chamber about 1"-1.25". To change them out, just unplug, and pull them out.
The Red Dragon pump used in this system has a union right at the pump. The thing we didn't like was that the speed controller was hard wired to the pump. So the speed controller has to be un-mounted from the bracket we made, and set off to the side while you get the pumps union un-done. Small price to pay for such an energy efficient pump that throws no heat. If I recall that pump will do about 2100 GPH at about 80 watts. We will be shooting for 1200-1400 GPH for this system.
The best back up pump is to run 2 smaller pumps for redundancy. But if you spend your money wisely, and go with top shelf gear, you should get a long service life. Back in the day, (1993 or so) we would install Iwaki pumps. I bet a large percentage are still running today. They are old technology for sure, but they delivered!
I hope I answered your questions, if you'd like to go more into detail, shoot me an email or PM and we can chat. Jason