PS I should have mentioned the Pros
Sump - Surface removal of proteins thru overflow, thereby increasing amount of light penetration into tank, protein buildup happens on water surface forming what i refer to as "the oil slick" (see Exxon). EZ water changes, I planned this out in advance so i have dedicated floor drains. Water changes so EZ my sister could do it, add digital timer to water holding reservoir with dedicated submersible pump at a total investment of around $50 and your done, you will probably have time to finish the kids treefort now with all the time and agony your saving yourself on water changes! Another advantage is EZ dosing of chemicals and/or fertilizers. The big CON is the wasting of C02 which is inevitable, but can be minimized with proper precautions - I hope Im right cause if I end up burning thru the gigantic cannister every 3 weeks Im gonna wish I could have learned to like cannisters
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