Tank 4: 161 gal African tank
This is my fourth largest tank and has been devoted to large African fish
- several Polypterus species (bichirs), an African tigerfish,
and a Synodontis catfish.
|Tank Size (LxWxH) ||Approx 7x2x2' (84x23x24"/213x58x61cm)|
|Volume ||Nominal: 161 imp gallons/192 US gallons/725 litres|
Actual: 136 imp gallons/162 US gallons/612 litres (+ 27 UK gal filter volume)
|Filtration ||Home-made external filter box - 24 x 12 x 28" (61 x 30 x 71cm), powered by Hagen PRO4 powerhead with Quickfilter cartridge.
There are triple pre-filtration sponges (course, medium, fine), and the main biomedia is highly porous Alfagrog rock.
In addition, an Eheim 2010 internal filter is used for extra circulation.
There is also a large airstone to help maintain a high oxygen level. |
|Heating ||Heated room|
|Lighting ||Low - fluorescent room lighting only.|
|Substrate ||Thin layer of aquarium sand|
|Decor ||Bogwood, large smooth rocks, large artificial plant|
|Background ||3-D effect artificial background|
|Water parameters ||Temp=26oC ; pH=7.0-7.2 ; GH=4 ; KH=2|
30% water change every week.
|Fish stock ||
Polypterus delhezi (10")
Polypterus endlicheri (10")
Polypterus mokelembembe (9")
Polypterus (palmas) buettikoferi (9")
African tigerfish (Hydrocynus vittatus) (12")
Synodontis decorus (10").
|Polypterus mokelembembe||Polypterus buettikoferi|
This tank has a very large capacity filter to cope with the waste load from large predatory fish. The external glass unit
has a capacity of 27 (34 US) gallons and essentially functions like a sump except that mechanically prefiltered water is pumped to it by
a powerhead with prefilter cartridge and flows back by gravity. However, unlike a sump, almost 100% of the capacity is filled with media.
The African tigerfish makes a stunning centrepiece for this tank, cruising slowly or hovering almost stationary in the water until
food is thrown in, which results in lightning-fast lunges!
The tank also houses several of my large Polypterus collection. Also on an African theme, is the Synodontis catfish
- a lovely specimen of one of my favourite Syno's - S. decorus.
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