How Do I Find The Enheim Prefilter - My Experience

RSababady

Well Known
Member
Messages
1,312
Reaction score
732
Location
Warsaw, Poland
Experience
More than 10 years
I use two Tetra EX1200 canister filters in my 450l tank. One of the filter's intakes is connected to an EnheI'm water skimmer that I wrote about here and the other one was connect to a sponge. The sponge was used as a prefilter, however it used to give me a lot of grief as whenever I tried to take it out for cleaning, a lot of the muck would end up falling off and getting into the water. I even got to the point of putting a plastic bag over the sponge before switching the filter off to catch the dirt - but somehow lots of dirt always managed to escape back into the tank.

So I shopped around and bought an EnheI'm prefilter. Here is what I found:

The unboxed EnheI'm refilter is a lot bigger than I thought initially. I guess I wasn't expecting it to be this big!
full.jpg

In multiple opinions, I saw comments about the prefilter cracking and breaking up when being opened. My advice is to READ THE INSTRUCTIONS!
The prefilter has agrey rings with a tab in the front. Once you press the tab in the front, the ring expands and you need to hold the piece to be removed 90 degrees to the tab on opposite ends and gently work the piece off.
Once off, you will see three sections - top cover, middle section and bottom section.
full.jpg

There are two white sponges inside that are fairly course, but springy - seem to be good quality.

The bottom section is important, as it stops water flowing directly up into the filter avoiding the sponge prefilter. The bottom piece also allows for seating on the substrate without sucking substrate into the prefilter which is of course very useful!
full.jpg


Connecting the prefilter to my installation was tricky even though I use standard 22mm piping. I had to use a short piece of plastic pipe to connect the prefilter to my adjustable plastic piping.
full.jpg


Once installed, the prefilter looks good and I managed to hide it behind one of my plants.
full.jpg


Will come back and post again in two weeks time when it is time for a WC and a prefilter clean. Hopefully this time I will actually clean the tank and not dirty it when taking the prefilter out for cleaning!
 

THRESHER

Well Known
Member
Messages
811
Reaction score
427
Location
The Empire State
Experience
5 to 10 years
Excellent! I've been thinking of getting one of these for my EheI'm Pro4+ 250 canister. Maybe two, second to add to my SunSun 304B. Thanks and will be looking forward to your 2 week update!
 
  • Thread starter
  • Thread Starter
  • #3
OP
RSababady

RSababady

Well Known
Member
Messages
1,312
Reaction score
732
Location
Warsaw, Poland
Experience
More than 10 years
full.jpg

Someone seems to enjoying having a new ledge to hangout on
 
  • Thread starter
  • Thread Starter
  • #4
OP
RSababady

RSababady

Well Known
Member
Messages
1,312
Reaction score
732
Location
Warsaw, Poland
Experience
More than 10 years
Two weeks later, I took the pre-filter out to clean.
I don't utilise this pre-filter as a biological filter so everything was washed in luke warm running tap water.

After two weeks of use here are some pictures of the prefilter when I took it out too clean.


full.jpg

The pre-filter taken out of the tank after two weeks. There was little debris nor muck stuck onto the outside wall of the pre-filter. It was all stuck to the sponges.
full.jpg

The top sponge of the prefilter doesn't collect as much muck as the bottom sponge in the prefilter.
full.jpg

The bottom sponge of the prefilter seen from the top. The dirt gets trapped in the sponge all the way to the center of the filter.


full.jpg

The sponge at the bottom of the picture comes from the top half of the prefilter. The sponge at the top of the picture comes from the bottom half of the prefilter.
full.jpg


This is the space below the pre-filter. I found a lot of dead plants and debris under the location of the pre-filter. This was not stuff that fell off the pre-filter when I disconnected it - was there all the time.
 

DoubleDutch

Fishlore Legend
Member
Messages
20,027
Reaction score
14,267
Location
Holland (The Netherlands)
Experience
More than 10 years
I have the same sponges running in my internal eheims. Noticed though rinsing them often they eventually will clog down and have to be rinsed more often.

But seems to work great your way !.
Is the cory a C.schwartzI ?
 
  • Thread starter
  • Thread Starter
  • #6
OP
RSababady

RSababady

Well Known
Member
Messages
1,312
Reaction score
732
Location
Warsaw, Poland
Experience
More than 10 years
DoubleDutch said:
I have the same sponges running in my internal eheims. Noticed though rinsing them often they eventually will clog down and have to be rinsed more often.

But seems to work great your way !.
Is the cory a C.schwartzI ?
Interesting that the sponges eventually get clogged up....... I intend to rinse them out every two weeks when I do a water change...... thx for the feedback Dutchy!

As for the cory - you have a GREAT eye for cories .... yes I have five of them in my big tank. They are small in size 2.5cms at the most but are adorably playful and busy little fellas.
 

THRESHER

Well Known
Member
Messages
811
Reaction score
427
Location
The Empire State
Experience
5 to 10 years
Wow, just 2 weeks and the pre-filters got like that? They do look "well used", but did it hinder flow? I only ask because when I do water changes I rarely need to touch my canister filters, but my HOB's I'll do a quick wash in the tank water with them if they need it.

So do you still recommend the pre-filers?
 
  • Thread starter
  • Thread Starter
  • #8
OP
RSababady

RSababady

Well Known
Member
Messages
1,312
Reaction score
732
Location
Warsaw, Poland
Experience
More than 10 years
THRESHER said:
Wow, just 2 weeks and the pre-filters got like that? They do look "well used", but did it hinder flow? I only ask because when I do water changes I rarely need to touch my canister filters, but my HOB's I'll do a quick wash in the tank water with them if they need it.

So do you still recommend the pre-filers?
That's a good question.
I have two canisters in this tanks (125g), so I started using pre-filters about a year ago as I was having to clean the canisters every 30 days. I started with ordinary sponge filters on the inlets, which I washed every two weeks when doing a water change. The main problem with these sponge filters (and Iam not referring to the EnheI'm pre-filter) is as soon as I switched the filters off (ie. the pumps), muck would drop from the sponges back into the tank. This also happened when taking the sponges out of the tank to wash during a WC.

The EnheI'm pre-filters are in a plastic casing, so next to nothing falls back into the tank - this is their greatest attributes.

Do they reduce water flow? Not at this stage, however Double Dutch mentioned above, that he uses them and after a while the sponge deteriorates and then they start to retain muck in them during a rinse and this I am sure will reduce the water flow.

So after weeks of use - yes I still recommend them as mechanical pre-filters.
 

THRESHER

Well Known
Member
Messages
811
Reaction score
427
Location
The Empire State
Experience
5 to 10 years
RSababady said:
That's a good question.
I have two canisters in this tanks (125g), so I started using pre-filters about a year ago as I was having to clean the canisters every 30 days. I started with ordinary sponge filters on the inlets, which I washed every two weeks when doing a water change. The main problem with these sponge filters (and Iam not referring to the EnheI'm pre-filter) is as soon as I switched the filters off (ie. the pumps), muck would drop from the sponges back into the tank. This also happened when taking the sponges out of the tank to wash during a WC.

The EnheI'm pre-filters are in a plastic casing, so next to nothing falls back into the tank - this is their greatest attributes.

Do they reduce water flow? Not at this stage, however Double Dutch mentioned above, that he uses them and after a while the sponge deteriorates and then they start to retain muck in them during a rinse and this I am sure will reduce the water flow.

So after weeks of use - yes I still recommend them as mechanical pre-filters.

Ahh, gotcha. Well I'm not using any sponge filters on any of my filter intakes (canister or HOB), but I'd like to try them. I'll need to order 2 of them, one for each of my canisters, but I figured regular sponges for my HOB's is enough for them. Thanks for the update!
 

Islandvic

Fishlore VIP
Member
Messages
4,662
Reaction score
3,047
Location
South Texas
Experience
2 years
Thanks for that write up on the Ehiem pre-filter. Those look great!

I use Lustar ATI Filter-Max pre-filters and Top Fin sponges zip tied to my HOB intake tubes.

I have always used a ziploc quart or gallon bag and slipped it over the sponge and closed it as much as I can before removing the sponge. Of course this is while the filter is off. I have very minimal leakage from the sponges using this method.
 

New Threads

Similar Threads

Follow FishLore!

FishLore on Social Media

Online statistics

Members online
161
Guests online
3,295
Total visitors
3,456

Aquarium Photo Contests

Aquarium Calculator

Top Bottom