Bulk Reef Supply has some inexpensive models also. I have their combo carbon/gfo reactor. It works good. Just happens there is a group buy going on until Monday
Try using the attachments, below the text box, instead of add photo. Click on browse. Find the pic on your computer. click on it and then click on attach this file.
As above, add Di but if you are going to drink the water also, I would put a T in after the tank to go to the DI so that you don't drink the DI water. It is so pure that it will lower the amount of electrolytes in your body. You might want to add as second carbon filter before the Ro membrane.
I would let the skimmer work for a while and see how it helps with export. Live sand is kind of a crock. It sits in a bag for months and really does not have much if anything alive in it. I think a good investment would be a Ro/Di unit. Having the ability to make your own water helps to keep up with water changes and general husbandry of your system. It is an investment that will save you money in a very short amount of time if you just figure the time and gas going to and from the stores.
With out a skimmer and a significant other source of nutrient removal, ie. refugium with remote dsb, it is recomended to do 50% water changes weekly. You have to weigh the options, mico bubbles vs. extra time and troble of water changes.
I would not use that pump, it is a septic pump and not made for a sw tank. A 1 1/2" drain pipe will handle up to 1200gph. Stick with pumps designed for aquarium use.
Cyano is a bacteria that is feed by the by products of waste in your tank. It does seem to have photo type properties about it.I don't know if that is due to it using Oxygen during the day and producing CO2 and then using CO2 at night or what the correlation is. It would seem that if you increase the amount of beneficial bacteria in you system to compete with the cyano for the nutrients you would lessen it's ability to thrive. This seems like it could easily be accomplished by using a product like Stability or by carbon dosing(vodka dosing). Vodka dosing creates an over abundance of one dominant type of bacteria that will choke out other types of good bacteria and requires the addition of other bacterial strains. It seems that it could have the same effect on cyano.
Just one of those things running around in my head