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very well done Dave, really like the video
just a few comments
adding more volume will not increase your bioload capacity, it will just take longer to pollute and require a great deal more export when it does, requiring more skimming power and/or other types of mechanical/biological/chemical waste removal
I guess it depends how you look at it. My customer was the one who wanted to add the extra two 600 gal containers to the system. I originally thought it was over-kill, but he convinced me that it wouldn't hurt. I must say that after seeing the system running for 10 months I completely agree with him.
If you have 100 fish in a 1000 gallon system producing waste that waste will be more concentrated than if it was diluted in a 2000 gallon system. The amount of waste would be the same, but the levels of nitrate would be lower in the larger system. Of course this does not take protein skimmers and other mechanical filtration into account. Could this system run well without the extra 1200 gal capacity? - absolutely. Will the extra capacity hurt in any way? - I can't see how. Will the added capacity help protect the display from sudden changes in water chemistry if some piece of equipment should fail? - Absolutely!! If a chiller goes out, a skimmer breaks down, a reactor clogs, a dosing pump fails, etc a system with larger water volume will fare better every time.
All equipment on this system was sized to easily handle the total system capacity of 2400 gallons.
large online storage containers tend to be nutrient sinks with gravity pulling the waste to the bottom of the tanks and ultimately add to the bioload instead of reducing it
This can be true depending on the system design and maintenance routine. The water is pumped into the containers from the sump where it is pre-filtered with filter socks. It passes through 240 watts of UV sterilizers before going through the two 600 gal containers. There is a small amount of detritus that still collects at the bottom of the containers. Water changes are done by agitating the water in one of the 600 gallon bins and then pumping out 400 of the 600 gallons. This removes most of the detritus that has collected in the bins and prevents it from building up too much.
instead of volume, adding more waste export mechanisms such as skimmers, carbon, macroalgae and the like will allow a higher bioload in the display
All of these methods are in place and running in addition to the extra 1200 gallons of capacity.
One thing I love about this hobby is that there are many ways to the same end result - a beautiful and successful reef aquarium. By trying out new methods and new designs and then sharing what we learn we will all continue to get better at this hobby.
Dave Burr
Vivid Aquariums