Cichlidude
- #1
After learning that there is no biomedia on earth that can produce anaerobic bacteria to reduce nitrates, the best thing to do is go for the most aerobic bacteria to support the most fish for your given water volume. You want fast flow through your filter to oxygenate your media for fast oxidation of ammonia. You also need porous media so the water goes through the media and not around it.
The flow through the filters does the following important tasks:
Knowing that Matrix and Biohome are inefficient media with low surface area numbers and water cannot flow through, I have changed up my media totally to a more efficient and large surface area media that water can flow through quickly.
Here are my old trays in the Sunsun 303B canister.

Tray 1, course, medium and two fine pads. Trays 2 and 3 totally filled with Matrix.
The new trays.

This is how I have loaded my trays now. Yep, you see that right. Foam and pot scrubbies! It appears that folks on the internet and Youtube had pot scrubbies right for years!
My decision to use this media was simple: Bio Media Comparison Information
Knowing that 10 ppI foam is mechanical and 20 ppI foam and ABOVE is biological, I have set up these trays as follows:
Tray 1 (bottom), flow is from bottom to top:
Top: ½ inch 20 ppI Poret from Swiss Tropicals.
Middle: 1 inch 10 ppI Poret foam.
Bottom: 1 inch 10 ppI Poret foam.
Here is where you want to be a little careful if you use any foam. It does not compress. The media trays for the SunSun are 3 inches high. But, they each have about ¼ inch protrusion on the bottom to fit them into each other for stacking. You need to take this into account.
You must subtract 1/2 inch of media for these trays to fit. Thus I have 2.5 inches of foam media.
Trays 2 and 3:
Filled with 14 Pot Scrubbies each that have about 20-30 ppi.
No filter floss at all inside that will clog this bad boy now. Looking to go up to 6 months before any cleaning, but we will have to see about that. I really expect 4 months.
Cost:
Poret Foam - About $40 including shipping, with plenty left over.
Pot Scrubbies – 2 packs of 24 from Amazon for about $8/each or $16, with plenty left over.
For those who wanted to know what I did with the Matrix removed, I poured it out in the dirt. I now have the most expensive rocks in the neighborhood, next to the driveway.

If interested this is How I fill my Seachem Tidal 75 with media now .
The flow through the filters does the following important tasks:
- The most important function is to supply the “beneficial bacteria” (autotrophic) on the surface and in the interstices of the biomedia a constant supply of ammonia from the fish.
- The second most important function is to supply a different type of bacteria (heterotrophic) on the surface and in the interstices of the biomedia a constant supply of carbohydrates and proteins from uneaten food to create crystal-clear water.
Knowing that Matrix and Biohome are inefficient media with low surface area numbers and water cannot flow through, I have changed up my media totally to a more efficient and large surface area media that water can flow through quickly.
Here are my old trays in the Sunsun 303B canister.

Tray 1, course, medium and two fine pads. Trays 2 and 3 totally filled with Matrix.
The new trays.

This is how I have loaded my trays now. Yep, you see that right. Foam and pot scrubbies! It appears that folks on the internet and Youtube had pot scrubbies right for years!
My decision to use this media was simple: Bio Media Comparison Information
Knowing that 10 ppI foam is mechanical and 20 ppI foam and ABOVE is biological, I have set up these trays as follows:
Tray 1 (bottom), flow is from bottom to top:
Top: ½ inch 20 ppI Poret from Swiss Tropicals.
Middle: 1 inch 10 ppI Poret foam.
Bottom: 1 inch 10 ppI Poret foam.
Here is where you want to be a little careful if you use any foam. It does not compress. The media trays for the SunSun are 3 inches high. But, they each have about ¼ inch protrusion on the bottom to fit them into each other for stacking. You need to take this into account.
You must subtract 1/2 inch of media for these trays to fit. Thus I have 2.5 inches of foam media.
Trays 2 and 3:
Filled with 14 Pot Scrubbies each that have about 20-30 ppi.
No filter floss at all inside that will clog this bad boy now. Looking to go up to 6 months before any cleaning, but we will have to see about that. I really expect 4 months.
Cost:
Poret Foam - About $40 including shipping, with plenty left over.
Pot Scrubbies – 2 packs of 24 from Amazon for about $8/each or $16, with plenty left over.
For those who wanted to know what I did with the Matrix removed, I poured it out in the dirt. I now have the most expensive rocks in the neighborhood, next to the driveway.

If interested this is How I fill my Seachem Tidal 75 with media now .