What's your favorite filter

Just wondering what your favorite filters is and why.

Micheal, what a coincidence you should ask this today. It's a good thing no one could hear me cursing one of my AC110s yesterday! I know they are very popular and loved by most, but I'm not in that group.

I love my Rena XP canister filters!! Quiet, easy to maintain, no mess or spilling of water involved.

Emperor 400 for HOB
XP's for canister

Sorry Aura for your trouble with AC110's but I still love mine!
I also use the Rena XP3's on my 125 and 75 tanks.

Eheim canister filters. For example I have an old 2013 that I bought in 1981 that still runs like a dream. Have´nt changed any parts in it. Not even the o-ring.

For my 125 and Scotts 75 salt we use the 300 fluidized bed filters by Life quard/Pentair. They work great, but they are just bio filtration. For mech we run "pond" sponge prefilters, from Homedepot, on Maxi jet powerheads.

90% of my tanks are run on AC's. I just love these filters (sorry Betty). The 160g has Rena XP3's, best conister I have ever had.

For aquariums over a hundred gallons I would have to say a sump-wet/dry system. Numerous advantages that almost everybody here is aware of.

For aquariums less than 100g it's hard to beat an AC110 used in conjunction with an XP3 canister.

Rena, and I have had a Marineland 360 running for a couple of years, with no issues. I have a wide variety of filters, both cans and HOB.

AC 110's

I'm surprised we have so many AC 110 filter lovers most of the time in filter topics all you hear about is canisters being the best.
I have 6 AC 110's and I usually get rid of the carbon bag which i replace with filter floss. The only problem I have had was bought one and when i got home it was all cracked. Took it back and the store swapped it with no problem.
I also picked up several Whisper 40's for half price and I use these on my 20 longs and so far they seem to do ok.

Micheal, I've had two ACs cracked and broken before I even opened the box.
I will say that their customer service was excellent with replacing the broken ones -- I just wish they had replaced them with Rena canisters.

There was a time I was a canister man myself, now don't get me wrong I still use canisters but I came to the realization that when you start having many tanks to maintain canisters start to become a PIA. I can thoroughly clean an AC110 in under 2 minutes but breaking down my Eheim 2028's take me 1/2 an hour or more to do a good job and that turns into almost an hour for my my Eheim 2080's and that's if the gaskets dont give me a problem.

I also like AC 110s best. I've got Emperor 400s, Penguin 350s, Whisper 60s and a Rena XP3 (which runs a close 2nd), but I still love the AC 110. I also think I like the Penguin 350 more than the Emperor 400. I wish the Emperor had a see through lid!!!

I had good customer service the 1 time I had to call AC for a replacement for a cracked intake tube.

for a bio filter nothing beats a fluidized sand filter 3 pounds of sand has something like 200 square feet of surface area, mechanical filter all i want is to cycle has much water over the filter media dont care if its a hob or canister.

Today I cleaned 4 canister filters... Marineland 360, Fluvals, and Cascade.
By far the easiest and less hassle was with the Marineland.