OASE Indoor Aquatics Biomaster Thermo 350

One of the coolest things ive bought for my freshwater planted tank. The Oase Biomaster 350 is a beast and a QUIET one at that, I have powerheads louder than this thing and I have to touch it to see if its on. The only thing I was disappointed with was that only one bag of bio media is included, the rest are sponges - so I added Seachem Matrix to two of the other trays along with the included biomedia. If youre feeling fancy you can opt for the Aquario Neo Lily pipes size large but the stock pipes are fine, just not as fancy.Water flow is good, a little more mellow than I expected with the spray bar, build quality is exceptional, easy to setup and go and the self siphoning feature is gold.Great price right now too, I have the UNS Delta 90 and it was cheaper than the Oase but the Biomaster is almost twice the capacity and quieter. Wish I'd gone Oase all the way.

I've had this filter for 2 months now running on my african cichlid tank. I went through sisse, fluval and now Oase. The Sisse was one the worst filter I've ever had the displeasure of using. It was incredible hard to get started, just for it to quick working hours later, speaking with Jay, the rep was even worse and was no help. money down the drain. The fluval worked for about a month, constantly clogged, and then the top started coming lose. luckily I was home when it happened... the second time, it drained my tank and flooded my room..... Fluval was no help to me. This Oase has been the easiest to assemble, the most quiet, and i do enjoy the built in heater. So far it's been a win.. if anything changes, I'll update this review

Extremely silent! Super easy to get it going. If I had to come up with a reason to dislike it I could say the tubes are a bit thick so it’s hard to keep them still, but you can replace it. Working great so far!

For some reason I was hesitant to spend the money on this but glad I did. The pre-filter is a little to fine of a sponge but that's a pretty easy fix if I want. Super quiet. Would recommend.

Let's get the negative out of the way first. When I received this, one of the rubber gaskets internally was torn, so I emailed Oase support with photos asking for a replacement gasket as I didn't want to return the entire product and hold up my aquarium build. I received the automatic confirmation email back, but never received an reply. After 2 weeks, I emailed again. They then promptly replied and said that the gasket was on back order and would not be available for another 4 months. They suggested I return it and get a new filter.I looked at it and didn't think it would cause any leakage, but thought it may lower the throughput of the filter. I chose to go with it and replace it at a later time at my own expense. Hopefully they won't make me purchase a new pre-filter assembly. The filter is working just fine. This made it a 4 star. If the gasket was good, I 100% would have given 5 stars...The only other thing I don't really like about the filter is the intake/output design. There are a few other cannister manufacturers out there that make the transition from hose to tank a bit nicer. The squarish fittings over the top of the tank are kind of floppy, only to have 1 suction cup on the output and 2 suction cups on the intake barely helping to hold it in place. This is compounded by the fairly stiff hose makes for a bit of a twisting bending moving activity to get everything to sit right on the tank. Don't get me wrong, it works, but I'm just saying it could be designed a little better.Now for the good. I pretty much like everything about the cannister. The pre-filter and ease of access. The integrated heater. The build quality and design. I did cut up one of the blue coarse filters to use on the pre-filter instead of using the finer sponge that came with it, but that's personal preference. Internally, I used the coarse filter on the bottom (1st media. Flow is bottom to top in the main part of the filter) the fine filter at the top and biomedia between them.Overall, I am extremely happy with this purchase and unless something catastrophic occurs, I will probably be using these exclusively in the future. I whole heartedly recommend this filter.

This filter is crazy quiet, water flow is the best I’ve seen yet. The filter is easy to set up, and seems almost over engineered … I have the spray bar set up to agitate the water surface , you can adjust the angle to suit your preference … Might need to figure out how to get the intake and output brackets, to fit my tank better, but other than I recommend this filter to everyone, anyone and people in between … Best filter I have ever had … Will adjust as needed if anything changes

I have had this up a running for a few years. The heater keeps the water warm. Right now it is on a 75gal tank with a few Oscar's and I have had no water quality issues at all.

I liked the fact of how easy it was to clean the pre-filter section and I liked the fact that the heater is built-in but it never filtered all the particles out of the fish tank because it keeps on getting air bound and each time it purges it disturbs all the matter in the filter, sending it all back into the tank. I worked on it and I finally got it so it didn't suck air in so I thought everything was going to be better, but it never filtered out all the finer particles. After several months, I was done with it and purchased a Fluval. Overnight, I could see a big difference and after several days I am very happy with the results of my new filter by Fluval. A $300 learning experience.