Biologically Established Active Sponge Filters
All of our tanks contain snails, so these filter may have small snails and/or their eggs on them.
Also, they contain the decomposed waste generated by the plants and
animals in the tank. They will be "dirty". This is not harmful and
is what happens in biological filters. The bacteria are short-lived
and create a large amount of bio-floc as it dies off. All of
this is normal, but if you are a offended by this, do not order
(might be a reason if you are having a difficult time establishing a
filter, since cleaning a filter too much is counter-productive).
If you are putting the filter in with new-born fry
or a tank that is 5 gallons or less, then the 50ppi
is the best choice, otherwise, the 15/30ppi filters are a better
deal for a much larger size.
There are likely hundreds of species of nitrifying bacteria in a
tank that has been "established" for over a year. This is why those
commercial "starter" products with a dozen or so species, don't work
very well. Our filters contain all the species in balance and
is why they work so much better.
The bacteria survives
shipping quite well, but faster is better when deciding on the shipping
method during checkout. If the filter freezes, the bacteria
may be killed so pay attention to the weather, here and where you
are. If it freezes, it is at your risk, so pay attention
to the weather and to where you choose to have them delivered. Sitting outside after
delivery is generally not a good idea.
It is very risky to order when night-time temps are below 0 F. We
are in a potentially very cold area of the country (zip 14760).
The filters vary in size and shape within the
range listed. All of our Active filters are the "Internal
Weight" filter version.
We have too many filter types to have them all in an "active" version
and this type is easy to ship without water leaking from the bag.
These are "established" in our disease-free aquariums. Read
about our process to eliminate diseases here.
This assures that no pathogens are transferred to your fish.
This is safer than using a filter out of your own tanks, since few,
if any are disease-free. These filters have been run for about
a month in our super healthy tanks to insure the nitrifying bacteria are well established
within the sponge.
If you do not see a box with Tabs below it means
your display is too small for this feature to work. For this additional
information you should view this on a device with a larger display.
When you receive these, make sure to add any water in the
bag to the tank. Do not worry about it being dirty. It is full
of nitrifying bacteria and you do not want to throw this out
or siphon it out with a water change until the tank is fully
Setting Up Filter: Run an airline to the lift tube. Insert the airline into the hole in the top side of the lift tube and thread
it to withn 1/2" of the bottom. Then insert the bottom of the lift tube into the hole in the sponge. You can put the filter into any part of
the tank. If it floats, genetly squeeze the air out of it.
Some people cut these to fit inside of power filters. That will work if the fit is tight, but if
water can travel around the filter instead of through it, then that is what the water will do
and it will not be as effective in establishing your aquarium.
We are not fans of "fish-less" cycling. It seems every time a customer is having trouble
cycling their tanks with our filters, it's a "fish-less" cycle. It's possible some additive in the ammonia
they're adding, is interferring with their test kit readings or is simply doing something to the nitrifying
bacteria. Either way, if you add one of our active filters, your tank is ready for fish. Forget about adding ammonia
The shopping cart will enable you to get a shipping quote
before paying for an order. Simply add the items to the cart,
view the cart by clicking on the "view cart" link in the upper
left corner and it will enable you to get a total for the shipping
before committing to an item.
Learn more about this product in these articles.
|These sponge filters are the best. I've instantly
cycled two tanks with these active sponge filters. I
will definitely buy these again. Thanks. :)|
|Ricardo Canedo, Tue Sep 12, 2017|
|I'm more than happy with this product. I've
been struggling to keep the ammonia levels low in my
betta tank for about a month and almost every cycling
aid hadn't helped me make much progress. Put one of
these in my small tank and it's almost completely
cycled in about 3 days. I'm very thankful that this
type of product is available because it probably saved
|Bailey, Sun Sep 03, 2017|
|This active sponge filter is the only way to go. Prior
to the arrival of my Select Kois, I filled my 37 gallon
with distilled water, put a little flake food in the
back of my oversized outside filter to seed the water
with a bit of ammonia and waited a week. After testing
showed a touch of ammonia, I put one of these in and
the nitrifying bacteria began dining on the ammonia.
|David Thomson, Sat Jun 24, 2017|
|1 active sponge filter, 3 tanks! Best $9 I've ever
spent. Each tank cycled in a little over 24 hours. I
can't thank you enough for making such a great/easy
product and for your patience answering all my
questions! Why aren't you the 1rst thing that pops
up when searching aquarium cycling? Would have saved me
lots of $. I will recommend you to anybody who asks in
a heartbeat! THANK YOU!!|
|Eve, Tue May 30, 2017|
|Wow, this worked quick. After trying several of those
starter cultures in a bottle, with no luck, this had my
tank perfect in 2 days. |
|Doug Schneider, Mon May 29, 2017|
|The Active Sponge filters work GREAT. This is my third
order I purchased. One is 30 ppi and one is 15 ppi
nice to have one of each in my 55 gal. tank. My angels
love the Angels+ flake I bought. Great price for the
amount I ordered 8oz. Will be making another order in
the near future. Thank you Steve for a great product. |
|Tom Koppa, Thu Apr 20, 2017|
|This is the second time in 3 years I have purchased one
of these to save me from my stalled nitrogen cycle. Had
to get another due to moving. Within 24 hours of
putting it in my Nitrates are half where they were and
my nitrites dropped little more than 2/3. I usually run
it for 1-2 weeks then remove it and cut out fitted
inserts from it for my canister filter to make double
sure that it cultivate.|
|Nathaniel, Thu Feb 09, 2017|
|These work great. I even have one in a 55 gallon
goldfish tank by itself after the hob filter broke and
it's keeping up.|
|Kelly, Sun Feb 05, 2017|
|Every time I setup a new tank, I order one of these
sponges. I've been ordering these sponges for a few
years now. Never fails me!!! Absolutely love these for
an instant cycle!! Thank you so much for a great
product! Customer for the life of my hobby addiction!
|Kelly, Sun Jul 31, 2016|
|Wanted to say THANK YOU for providing a wonderful
product. We were having a really hard time getting a
ten gallon tank with only one male betta fish to cycle.
Only 48 hours after adding this sponge filter our tank
"cycled" and has maintained perfect water
perametersi ever since. This is the rare product that
does exactly what it promises. Absolutely recommend!|
|Kris Streng, Tue Jun 28, 2016|
|Hello, I just wanted to send and email to say thank
you! I received 2 of your active filters on Thursday. I
made a very newbie mistake and changed to many things
and destroyed my cycle. I have been struggling for two
months to get it back on track. Daily water changes,
ammonia never going down, never seeing nitrite or
nitrate. I am in tears right now it is Sunday and my
tank is cycled. I found out about your filters from an
old post in a fish blog. I cannot thank you enough. I
am extremely happy with your product and I will be
ordering more for future tanks. |
|Julianna Moxley , Mon Apr 25, 2016|
|I just moved half way across the country, and took 20
angels, 5 discus and 13" and 14" Oscars.
Unfortunately, my filter media was lost, and after 5
days in coolers my fish were going into uncycled tanks.
I am so grateful these were available. Thank you!|
|Bethel Cooper , Sat Apr 02, 2016|