View Full Version : Bio-Balls recommendations

04-30-2004, 12:16 PM
I currently use Enkamat as a filter material. Comes in 39" wide roll. I cut it to fit in my outdoor filter, I liked it alot, nice void spaces, plus lots of surface area. Well, then winter came, and I brought it inside. Had to cut it up because the filter inside was a different configuration. So now, I cant take it back outside. The other thing I dont like about the Enkamat is it gets stuck together sometimes. Jagged edges and all. Its hard to get it to fit in a space and fill all the spots.

So I am thinking because of this indoor-outdoor situation that I might go with bio-balls. They would transfer very nicely from outside to inside. No cutting and would conform to any size space. If I put them in bags, they would be easy to transfer from place to place.

So I will need enough bio-balls to fill a 2x2x6 space (24 cubic feet). Somebody want to recommend the best bang for my buck ?

p.s. I also use bird netting in the house, cheap, but not easy to move around, and its hard getting it to pack into a space evenly. I also have 1" cubes of 20ppi open cell foam in a trickle tower, but they are so light and blow away easily. I got them cheap at an auction, but that was a once in a lifetime deal, if I had to buy more retail, they would be expensive.

04-30-2004, 01:56 PM
555ct 7.5 gal $29.99 plus $8 for shipping

These on e-bay look cheaper:
are they the same thing ?

I wonder how those balls compares size wise and surface area
to the coral life ones ? 5000 for $163 w/shipping ($ .032 cents apices)

Either way, looks like I will need about $1000 worth to fill my 24 cubic foot filter. Ouch. I can partition the filter. mabye I will make a 12 cubic foot area for filter matts for mechanical filtration, then 12 cubic foot for the bio-balls.

04-30-2004, 03:11 PM
GB -

I like the Kaldnes


And the Bio-ribbons stuff




04-30-2004, 04:58 PM
The Kaldnes might actually be cheaper. I buy from Aquatic-eco all the time!! I also want to fluidize my filter with air, so that might be perfect.

04-30-2004, 06:57 PM
"fluidize my filter with air" would probably do better than a Nexus. Let me know how it does.

05-03-2004, 10:13 AM
Im wondering what kind of air pump(s) I would need to evenly distribute air over a 16 square foot area (to 2' deep) Probably a blower. I can always add something later. Kaldnes sounds like a good media to go with.

05-03-2004, 07:12 PM
That's a good size to aerate. I'd go with the blower.

Fast Eddie
05-03-2004, 07:26 PM
If I was to make a fluidized Kaldnes in a 50 gal drum would I just put an air sourch such as a bubble disk in the middle of the barrel or strips along the sides? Also what size air pump would you say? Any clue?

05-04-2004, 08:03 AM
I'd use the strips along the sides. You want to get the media 'rolling' and I'm not certain a disc would do it. For 55gallons maybe a 40liter pump but more air like more filtration is better. Iím only going by how my Nexus works with the air flow. You can always regulate it or add other aeration devices to a lager pump later.

16* oooppps 15

Meagain #1b
05-04-2004, 08:26 AM
Can I ask a quickie re Kaldnes? Is it mainly used as bio or can it be used for mechanical also?

05-04-2004, 09:12 PM
Only charged $8 for shipping. That's 165 gallons worth! Great price, and great delivery price. I found a better price on eBay, but the guy wanted like $140 to ship them.

The above website ships based on the PRICE of the item, and not the actual size, which makes it a great deal, IMO. That order ONLY cost $668...


That's 555 per cu ft, 1 5/8" large balls, 74 to a gallon, $29.99 for 1 cu ft. Lee's Bio-Pin Balls.

Lee B
05-05-2004, 12:38 PM
Kaldnes is strictly bio, not mechanical. The water should be fairly well "strained" by the time it gets to the media. It's self cleaning inasmuch as the constant "boiling" media will knock against itself and strip off the old outer biofilm, exposing the new stuff. Some folks will run the water through one more level of filtration, like a sand filter or the like, to "polish" the water, ridding it of the shed biofilm. But most folks don't notice it, so that last step is not necessary unless you're a fanatic.