Which Is The Better Way To Set This Up

I finally ran out of carbon cartridges for my Marineland 350b, now it's time to switch up the media a bit and I need advice on how I plan to do it.
Option 1: Back row of filter holds floss or sponges while the front is filled with Fluval pre-filter
1.5: Same but with Fluval biomax instead
2: Pre-filter in the back row with the sponges up front
2.5: Biomax in back with sponges in front
3: Right or left side filled with either biomax or pre-filter, other side has the sponges
Thoughts on that or any other suggestions?

 

Just stuff the media box with Fluval replacement foam sponges. Nothing else needed. I did that several years ago to my "relic" Marineland 280 bio-wheel HOB. It's on an overstocked 65 gal. tank. The water stays clear & the fish are coloful and healthy. Maintenence; squeeze the sponges out once a month.

 

Well that'll be way cheaper than using both medias, sounds like something I'll try if it works. Which replacement sponge did you use? There are so many different types out there

 

Petsmart sells Fluval FX series replacement sponges. I believe approx 6-8 sponges come in a box. Very inexpensive. Each sponge should last for several years.

 

Start off small. Play around with different configurations and try another method if first one isn't doing what you want.

I would first try using a 3-pack box of Aquaclear 70 replacement sponges and a bag of Polyfil batting.

Amazon and Petsmart have them online for $5.99.