Fluval Filters

Fluval Aquaclear xxx Series 

The Fluval tray has provision for three layers. You will probably want to retain the provided foam. You might consider replacing it with GreatWave Medium Foam.

Based on the similarity with Fluval’s media we believe approximately the same amount of Biohome media would be required. Recommended Biohome media for these filters are: Standard, Plus, Mini or Ultimate. The Fluval specified media quantities and required Biohome quantities are shown in the table below: 

xxx Filter Biological Media Requirements
Model BioMax Size BioHome Required For 1 Stage BioHome Required For 2 Stages
20 60 gr 500 gr (minimum order) 500 gr (minimum order)
30 65 gr 500 gr (minimum order) 500 gr (minimum order)
50 125 gr 500 gr (minimum order) 500 gr (minimum order)
70 195 gr 500 gr (minimum order) 500 gr (minimum order)
110 390 gr 500 gr (minimum order) 1 kg 

Fluval x03 Series 

All models have 3 trays. Normally the first tray would be used for mechanical filtration (foam) leaving two trays for biological filter media. 

x03 Filter Capacity Based on Using 2/3rds of Published Filtering Area Volume
Media 103 Capacity 203 Capacity 303 Capacity 403 Capacity
Fluval Specified Filter Volume 1.182 lt (72 cu in) 2.216 lt (135 cu in) 3.7 lt (226 cu in) 6.48 lt (395 cu in)
Standard 500 gr 1 kg 2 kg 4 kg
Plus 500 gr 1 kg 2 kg 4 kg
Mini 500 gr 1 kg 2 kg 3 kg
Ultimate 500 gr 1 kg 2 kg 3 kg
BioMotion 1 lt 1.5 lt 2.5 lt 4 lt

Note: The capacity estimates based on Hagen specifications. If you have actual experience with these filters, GreatWave would be greatly appreciative to learn how much media the filters actually hold.

Fluval x04/x06 Series 

x06 Filter Capacity Based on Published Biological Volume
Media 106 Capacity 206 Capacity 306 Capacity 406 Capacity
Fluval Specified Biological Volume 1.37 lt (84 cu in) 2 lt (122 cu in) 3 lt (183 cu in) 4.2 lt (256 cu in)
Standard 1 kg 1 kg 2.5 kg 3.5 kg
Plus 1 kg 1 kg 2.5 kg 3.5 kg
Mini 1 kg 1 kg 2 kg 3 kg
Ultimate 1 kg 1 kg 2 kg 2.3 kg
BioMotion 1.37 lt 1 lt 3.1 lt 4.2 lt

Note: The Fluval X06 series includes high performance mechanical filtration. GreatWave would not recommend replacing it with the GreatWave Foam Filter Set. We would suggest removing the polyester polishing pad from the top and placing it on the top of the foam in the bottom tray.

Feedback from Bill Eisenhard indicates that the 206 will only hold 1 kg of Biohome. In May, 2015 we rebuilt two Fluval 406 filters with Ultimate media and measured 2.3 kg of media to fill three trays. All other capacity estimates are based on Hagen specifications. If you have actual experience with these filters, GreatWave would be greatly appreciative to learn how much media the filters actually hold.

Fluval FX4 Series

 

                                                                                                            Recommended Loading

FX4 Filter Capacity
Media Capacity
Fluval Specified Volume 3.9 lt (238 cu in)
Standard 3 kg
Plus 3 kg
Mini 3 kg
Ultimate 3 kg

Note: The GreatWave Foam Filter Set is not applicable to this filter. This filter has foam mats surrounding each tray to provide mechanical filtration. They also use a fine foam mat on top of each tray.

Fluval FX5 & 6 Series 

FX5 & 6 Filter Capacity 
Media Capacity
Fluval Specified Volume 5.9 lt (360 cu in)
Standard 5 kg
Plus 5 kg
Mini 4 kg
Ultimate 5 kg (see note)
BioMotion 6 lt

Note: The GreatWave Foam Filter Set is not applicable to this filter. This filter has foam mats surrounding each tray to provide mechanical filtration. They also use a fine foam mat on top of each tray.

A report from a customer, Dave Warner, provided information on the actual amount of Ultimate media required:

“This is the 6 kg of Biohome Ultimate divided into FOUR Fluval FX5 filter baskets. (I will be using two FX5 filters, each holds three media baskets) I used about 5 kg which left room for a 1/2 ” foam filter on top of each basket. I could obviously add a little more Ultimate if I did not use the foam filter.

Here are the photos Dave sent:  All other capacity estimates are based on Hagen specifications. If you have actual experience with these filters, GreatWave would be greatly appreciative to learn how much media the filters actually hold.

Fluval SPEC Series

The SPEC series is available in 10 liter (2.6 gal) or 19 liter (5 gal) sizes. The filters utilize a fairly large block of foam with two pockets cut out to hold biological or chemical filter media. These pockets are fairly small, so we estimate that 500 grams of Biohome would be more than adequate to fill them. A smaller media such as Plus would probably be the best choice.  Note: The capacity estimates are based on filter illustrations. If you have actual experience with these filters, GreatWave would be greatly appreciative to learn how much media the filters actually hold.

Fluval Ux Series

For the U2, U3 and U4 filters Hagen specifies 170 gr of bio media. The minimum amount of Biohome media you can order is 500 gr or 500 ml of BioMotion. This should be enough for two or three filters.

Note: The capacity estimates based on Hagen specifications. If you have actual experience with these filters, GreatWave would be greatly appreciative to learn how much media the filters actually hold.