Pics from JulioVideo

[kerry]

If you run a proper scrubber nitrate will always be zero as well. How does the plenum consume nitrate? I didnt have time to read the article, does it have an anaerobic effect on the nitrogen cycle to complete it in full?

[juliovideo]

If you run a proper scrubber nitrate will always be zero as well. How does the plenum consume nitrate? I didnt have time to read the article, does it have an anaerobic effect on the nitrogen cycle to complete it in full?

The Plenum: Sounds weird but can actually be amazingly helpful for an aquarium. A Plenum system is a type of Biological filter that uses a deep bed of live sand (micro and macro organism packed sand from the sea) suspended an inch or so off the aquarium bottom as the biological filter that contains both aerobic (removes ammonia and nitrite) and anaerobic (removes nitrates) areas in its depth which is traditionally about 5 inches.

The Plenum system (also known as a Deep Sand Bed or “DSB” filter) was developed by a very smart Dr Jaubert (and so is also known as the Jaubert system, argh so many names for this one thing!!!!) for keeping his reef aquarium heathy. The plenum itself is the oxygen free lower level of sand/gravel suspended by a plastic grid on supports above the aquarium base so that warm water (generated from the anaerobic conversion of nitrates into nitrogen gas) can drift up through the filter and removes any harmful hydrogen sulphide build up in the sand bed.

The surface of the plenum system will be packed with sand stirring filter feeders aerating and cleaning the top layers of Live Sand that contain the aerobic bacteria, sand sifting Gobies and Wrasses add to this effect.

by : saltwateraquariumadvice


=======================

The success of a plenum is determined by the design and the type of sand in thickness to use;Usually uses two types of sand, just a thick enough not to go into the plenum and a thinner top...........The best screen or mosquitoes netting in the plenum is made of nylon.


:-)


---------

[Jason]

So, you have this mix of jaubert/dsb since the begginning of the tank ?

Can you share some dimensions and specs about it ?

I have been reading about the "true" Jaubert system, it requires light and the sand layed is not as thick as a true dsb can/should be.

[juliovideo]

So, you have this mix of jaubert/dsb since the begginning of the tank ?

Can you share some dimensions and specs about it ?

I have been reading about the "true" Jaubert system, it requires light and the sand layed is not as thick as a true dsb can/should be.

Yes, I have three biological filters in my sump ........ Algal Scrubber, Plenum and spaghetti algae refugium.

I'll take some pictures soon to show.

I think the DSB can fail in 5 years, unless you give maintenance.The same applies to the plenum but it's different, you need to remove the sediment and holding on its surface every 3 or 4 months in the plenum, the plenum has best and most bacteria in the lower part ,by it has a cavity more wider without of sand and oxygen.