page3

Code	Filter size L x W x D	Filter Volume	Pond Vol.	Price	Order
BF 00	3'L x 16"W x 23"H 3 bay	3cu.ft /85l	800g	£
BF 01	4' x 16" x 23" 4 bay	4cu.ft /112l	1000 g	£
BF 02	5' x 24" x 24" 4 bay	9.6cu.ft /270l	2500 g	£
BF 03	6' x 24" x 24" 4 bay	11.6cu.ft /325l	3000 g	£
BF 04	8' x 24" x 24" 4 bay	16cu.ft /450l	4000 g	£
BF 05	10' x 24" x 24" 5 bay	20cu.ft /560l	5000 g	£
BF 06	5' x 30" x 30" 4 bay	18cu.ft /500l	4000 g	£
BF 07	6' x 30" x 30" 4 bay	20cu.ft /558l	5000 g	£
BF 08	8' x 30" x 30" 4 bay	28cu.ft/785l	6500 g	£
BF 09	10' x 30" x 30" 5 bay	36cu.ft/1010l	8000 g	£
BF 10	5' x 36" x 30" 4 bay	21cu.ft/588l	5000 g	£
BF 11	6' x 36" x 30" 4 bay	25cu.ft/700l	6000 g	£
BF 12	8' x 36" x 30" 4 bay	35cu.ft/980l	8000 g	£
BF 13	10' x 36" x 30" 5 bay	43cu.ft/1205l	10000 g	£

Multibay Biological Filters are designed for the biological removal of ammonia , nitrite and the settlement of solids from pond water. The filters can be pump or gravity fed. Tank connectors are supplied loose, so they can be fitted into the filter in any position as required. All connectors are supplied with either a backnut or stainless steel screws and we recommend using a silicone or PU mastic to seal. Water passes through each bay by upflow / downflow,

this ensures maximum contact with the filter media promoting high efficiency through the filtering process. The smooth laminar flow generated by the filter design encourages solids to settle into the bottom of the filter where it collects.
Settled waste solids are removed through 1½" drain outlets fitted at the base of the filter. Valves & pipework can then be fitted directly to these to for drain to waste. Media support trays are supplied for each bay except the first. Valves are supplied for the fixed drain positions.
.

The filters are reversible for flow direction
Filters can also be supplied complete with biological filtration media.
The media is supplied as: Bay 1, two rows of 6" brushes. Flocor in bays 2/3 and Alfagrog in bay 4 (5).
We can supply other media and would be pleased to quote on request.
Media capacity is calculated on all bays except the first which has brushes. All figures for volume relate to media and not the actual capacity of the filter.

The principle of biological filtration is the same, regardless of whatever equipment is supplied. That is bacteria take ammonia and turn it into nitrate. The bugs take a toxic form of nitrogen (fish poo) and turn it into plant food-simple. Take a look at the nitrogen cycle if you want to know more.
The actual mechanics of biological filtration can take many forms each has advantages and disadvantages. We have learnt that every filter installation is different. We offer simple straight-forward equipment which has been proven over many years to be efficient and easy to maintain

Installation For gravity fed filters the top of the filter, when installed, should be a minimum of 1"
higher than the top level of the pond water. The filter must be sited on a level concrete base.

LIDS FOR BIOLOGICAL MULTIBAY FILTERS:

Drop on apex type, to shed water off. Made from black polypropylene Lift off type, hinged available.

Lids for longer filters are made in two or three sections with over lap joints.

Code	Filter size L x W x D	Filter Volume	Pond Vol.	Price	Order
MF 00	3'L x 16"W x 23"H 3 bay	3cu.ft /85l	800g	£
MF 01	4' x 16" x 23" 4 bay	4cu.ft /112l	1000 g	£
MF 02	5' x 24" x 24" 4 bay	9.6cu.ft /270l	2500 g	£
MF 03	6' x 24" x 24" 4 bay	11.6cu.ft /325l	3000 g	£
MF 04	8' x 24" x 24" 4 bay	16cu.ft /450l	4000 g	£
MF 05	10' x 24" x 24" 5 bay	20cu.ft /560l	5000 g	£
MF 06	5' x 30" x 30" 4 bay	18cu.ft /500l	4000 g	£
MF 07	6' x 30" x 30" 4 bay	20cu.ft /558l	5000 g	£
MF 08	8' x 30" x 30" 4 bay	28cu.ft/785l	6500 g	£
MF 09	10' x 30" x 30" 5 bay	36cu.ft/1010l	8000 g	£
MF 10	5' x 36" x 30" 4 bay	21cu.ft/588l	5000 g	£
MF 11	6' x 36" x 30" 4 bay	25cu.ft/700l	6000 g	£
MF 12	8' x 36" x 30" 4 bay	35cu.ft/980l	8000 g	£
MF 13	10' x 36" x 30" 5 bay	43cu.ft/1205l	10000 g	£

Code	LID for filter size	Price	Order
BLF 00	LID for 3'L x 16"W	£
BLF 01	LID for 4' x 16"W	£
BLF 02	LID for 5' x 24"	£
BLF 03	LID for 6' x 24"	£
BLF 04	LID for 8' x 24"	£
BLF 05	LID for 10' x 24"	£
BLF 06	LID for 5' x 30"	£
BLF 07	LID for 6' x 30"	£
BLF 08	LID for 8' x 30"	£
BLF 09	LID for 10' x 30"	£
BLF 10	LID for 5' x 36"	£
BLF 11	LID for 6' x 36"	£
BLF 12	LID for 8' x 36"	£
BLF 13	LID for 10' x 36"	£