Originally Posted by
Allstars
ah ok ... sa low pressure system or gravity fed filtration, use less electricity right? so, does it means no pump motor involve, and only rely sa gravity?.
and hmmm, i wonder! dili kaha maka solod or ma suck-up ang koi sa whole sa mainpond? bacn ma filter og apil?.
kana imong pond sir unsai gamit nimo filtration sytem ana? gravity or pump fed
i guess gravity kay dako kaayo imong pond.
maayo kaayo.
the electricity consumption depends on the type of pump nga gi gamit. All closed-systems (meaning water recirculates) require pump gyud. Most literature on the matter suggests grav fed systems to be more efficient / effective hence the lesser need for bigger pumps.
Normally, grav fed systems have the pump at the last stage of the filtration system. Advantage of this is that pond debris is drawn gently through the bottom drain instead of sucked through the pump impeller. In short, grav fed makes life easier for the pump and allows the filter to trap pond debris without breaking up the fish poo.
The system above uses 2xbottom drains with a dome cover with a 1/2" gap. large koi wont be able to fit...for very small koi, the worst thing is that they could end up trapped in the 4" pipe or the vortex. This is better than having them sucked through a pump fed impeller and cause a clog.
Sa akong nabasa, daghan sad ga gamit ug vortex mainly because of easy maintenance (no more washing filter brushes) and efficient sad sya in removing solids from the water along with frequent flushing sa systen.