I'm looking to buy a used Fluval M90 this weekend. Have not looked at it yet other than a picture from the seller. I currently have a smaller Fluval EVO 13.5 gallon set up as a mixed reef that has been thriving since 2018. But I have decided to expand a little. My space is limited so I think this will be a perfect size for now. 
I have not been able to find any information on line including Fluval's website in regards to filtration, or parts replacement. I don't know what I will get until I get there. The seller said it has sat up for 2 months and has coralline on the back. It comes with an HOB protein skimmer, an ATO, return pump and anything needed to get the tank going. So if anyone has experience with this model tank, any information or advise on issues experienced, filtration recommendation or what to look for it will be greatly appreciated.
I have not been able to find any information on line including Fluval's website in regards to filtration, or parts replacement. I don't know what I will get until I get there. The seller said it has sat up for 2 months and has coralline on the back. It comes with an HOB protein skimmer, an ATO, return pump and anything needed to get the tank going. So if anyone has experience with this model tank, any information or advise on issues experienced, filtration recommendation or what to look for it will be greatly appreciated.
