Poret foam substitute - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old 01-07-2014, 12:08 PM Thread Starter
Planted Member
PTrader: (1/100%)
Join Date: Mar 2006
Location: Modesto,ca
Posts: 240
Poret foam substitute

Hello everyone. I've been looking for some foam to stick in my sump to beef up my filtration. I know poret is supposed to be a great product but it is ridiculously expensive. I've been looking around and I found a site that sells open cell foam in either 20 or 30 ppl. It is labeled as speaker/filter foam. It doesn't say flame resistant or mildew resistant so I think it may be non toxic. Has anyone out there tried anything like this? It is a fraction of what aquarium foam costs.
jl209 is offline  
Sponsored Links
post #2 of 11 (permalink) Old 01-07-2014, 12:41 PM
Wannabe Guru
PTrader: (6/100%)
Join Date: Aug 2011
Location: Centennial,Co
Posts: 1,836
You don't want to use speaker foam you want pond filter foam. I buy it in sheets at my local nursery. Any place that has pond supplies will have it.
BruceF is offline  
post #3 of 11 (permalink) Old 01-07-2014, 01:22 PM
Planted Tank Guru
PTrader: (4/100%)
Join Date: Feb 2012
Location: Bushkill, Pa
Posts: 2,577
This caught my eye.

The price of Poret has made my eyelids curl too.

I'm not a pond guy (but I will be someday!), so the pond filter foam is totally unfamiliar to me. Is it as semi-rigid as the Poret?

I only spent a few minutes on this, but I just came across this:


It's been while since I looked into this, so I don't know how this stacks up against Poret, pricewise or otherwise.

Last edited by Darkblade48; 01-07-2014 at 01:33 PM. Reason: Please use the edit function for back to back posts to keep threads cleaner
Bushkill is offline  
post #4 of 11 (permalink) Old 01-07-2014, 01:38 PM
Planted Tank Enthusiast
PTrader: (15/100%)
Join Date: Sep 2012
Location: mt prospect
Posts: 925
poret foam is really cheap if you factor in that it does not ever need to be replaced.

I use the more open cell foam for bio filtration and the black for mechanical filtration(it gets rinsed out every week and it really collects a lot of junk).

I also have some sheets of mattenburg?? but noy nearly so fond of that stuff...

20L My Other Tank: OEBT Shrimp
40B Inlaws Tank: 2 goldfish
75 Main Tank w/ sump: 5 Glossolepis pseudoincisus, 5 Melanotaenia boesemani, 10 Melanotaenia praecox, 5 Melanotaenia lacustris, some cories, a bn pleco and rainbow fish fry
dprais1 is offline  
post #5 of 11 (permalink) Old 01-07-2014, 03:22 PM Thread Starter
Planted Member
PTrader: (1/100%)
Join Date: Mar 2006
Location: Modesto,ca
Posts: 240
Bush I actually have matalla in my sump. I have the blue and while its probably great for bio filtration it sucks at mechanical filtration. I have some floss after the matalla and I still have to change it weekly so matalla doesn't catch anything IMO. Of course there is one grade finer than I have but I'm not going to waste my money finding out. I googled and read people that cautioned against speaker/air filter foam and people that used it and said it worked great. People also say its rigid enough to use t like poret. I really only go with advice with this site though so I'm looking for examples around this neck of the woods.
jl209 is offline  
post #6 of 11 (permalink) Old 01-07-2014, 05:58 PM
Planted Member
PTrader: (4/100%)
Join Date: Jan 2013
Location: Middleton, WI
Posts: 213
The economics of foam are interesting. From what I've been told, the Poret-style polyether foam is harder to come by in the US, evidently due to federal government requirements for fire retardants, although you can find it. Angels Plus carries some. I got over my initial price shock and went with Poret from Swiss Tropicals, because I know it is purpose tested, and I've been happy with my purchases.

There are other options, too. You could use polyfill bedding in your sump. I've used that for years, and it works great, is very cheap (especially on sale), but clogs regularly and will need to be replaced. I've actually been testing two inch polyfill between plastic canvas with blackworm cultures growing in them as mattenfilters, but I'm expecting them to permanently clog eventually. They've been going for about six months now on two of my tanks.
Aquaticus is offline  
post #7 of 11 (permalink) Old 01-07-2014, 10:24 PM
Planted Tank Guru
lochaber's Avatar
PTrader: (1/100%)
Join Date: Jan 2012
Location: Oakland, CA
Posts: 2,317
I also think that the poret isn't that expensive when you look at the size of the piece of foam you are getting.

You could also try going with a thinner piece, and backing it with something like eggcrate for structural purposes.

I don't know how accurate it is, but one of the articles I read on mattenfilters claimed that most of the bacterial colonies were in the first inch or so, and the rest of the foam was just structural.
lochaber is offline  
post #8 of 11 (permalink) Old 01-08-2014, 12:12 AM
Algae Grower
PTrader: (0/0%)
Join Date: Mar 2009
Location: Michigan, USA
Posts: 62
Aquarium-safe, water-proof reticulated foam for filters


Sources for aquarium foam (water-proof reticulated foam). And, a very good description of water-proof reticulated aquarium foam, from AngelsPlus.com:

"Many of these Hamburg Mattenfilter style filters have such a large surface area that they out-filter much more elaborate and expensive filters on the market. Maintenance is simple and there is almost nothing to ever break or wear out.

PPI - stands for "Pores per Inch". So, 50 ppi means 50 pores per inch, which means they are smaller pores than 15 ppi, which is only 15 pores per inch.

Smaller pores tend to clog quicker, but offer more surface area. Literally all pores sizes will over-filter a heavily stocked aquarium. The biggest considerations are usually how quickly it will clog or are there any new-born fry that may swim into a large pore size."

FYI, you can place a coarse sponge (15 PPI Coarse) in front of a medium sponge (30 PPI Medium), before a fine sponge (50 PPI Fine). This will catch large crud in the coarse 15, then smaller pieces in the medium 30, and fine pieces in the fine 50 PPI, then perhaps followed by a "polishing pad or sheet". Or, just use the 15 in front of the 50 PPI. Your choice.

AngelPlus.com links:

Other sources, some of which are round, some are rectangular blocks:





Mark13 is offline  
post #9 of 11 (permalink) Old 01-08-2014, 04:14 AM
Algae Grower
PTrader: (0/0%)
Join Date: Jul 2013
Location: In front of computer
Posts: 9
I got foam from AngelsPlus.
Highly recommended.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Techno77 is offline  
post #10 of 11 (permalink) Old 01-09-2014, 11:01 AM
Planted Tank Guru
PTrader: (4/100%)
Join Date: Feb 2012
Location: Bushkill, Pa
Posts: 2,577
Originally Posted by Techno77 View Post
I got foam from AngelsPlus.
Highly recommended.
Top notch folks. Absolutely.

I looked at this photo in the Pentair link above:


At 1" thickness it may suit some folks' needs a little better. Just an option. It looks like the same material as the foam blocks in HOB's and canisters.

My needs for it are probably different than most folks'. I've been trying to find a way to conveniently divide tanks temporarily. The holes in eggcrate are too big for my needs in most cases. Gonna scratch my head on this a little more.
Bushkill is offline  
post #11 of 11 (permalink) Old 01-09-2014, 11:23 AM
Planted Tank Guru
PTrader: (33/100%)
Join Date: Jul 2011
Location: Gone
Posts: 5,994
This is maybe 10PPM? I got a huge block of this about 15 yrs ago from a Business Customer that made filtration units for the food industry. I use it in HOBs, Canisters, DIY pond filters and here as a Matten Filter in my Aquaponic sump.

When you consider how long good quality foam lasts the $$$ make more sense. It's also getting harder to find "clean" foam due to fire proofing regs.

Last edited by DogFish; 01-10-2014 at 12:11 AM. Reason: sp
DogFish is offline  


Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome