# Installing the RedSea ReefMat 1200 into the sump

{% hint style="warning" %}
\*\*\****You can use either 1 or 2 RM1200 roller mats in these sumps. The flow rate into the sump will determine whether you need 1 or 2 roller mats. Each SK5000 is rated for 1200 GPH MAX, so 2 will be 2400 GPH MAX. If using only 1 Roller mat, you can use 1 filter sock as well. For the quietest operation we recommend keeping the flow below the SK5000's  Maximum flow rate.***
{% endhint %}

#### Basic connection of the RM1200 to the sump.

* You can use the corrugated black pipe that is included with the RM1200 and the adapters that Redsea has included. But be aware that you need to use a 1.5" to 1" PVC adapter for this to work as they only include a 1" PVC connection for the stock plumbing. 

Determine how you drain into your sump. There are 2 ways to connect the RM1200 to each section in the RM72 Sump.

1. Single drain into 1 Reefmat [click](https://docs.synergyreef.com/installation-manuals/rm-sump-installation/rm44-sump-setup/single-1-drain-into-1-reefmat-1200)[ here](https://docs.synergyreef.com/installation-manuals/rm-sump-installation/rm44-sump-setup/single-1-drain-into-1-reefmat-1200)
2. Dual Drains into 1 Reefmat [click here](https://docs.synergyreef.com/installation-manuals/rm-sump-installation/rm44-sump-setup/dual-2-drains-into-1-reefmat-1200)

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<figure><img src="https://2718115937-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FLoYUrb1sSB6RyPx4P7sZ%2Fuploads%2FECiLBKwxSTNw4HjfuZKu%2FRedSeaRM1200_Adapter.jpg?alt=media&#x26;token=48623f88-1230-46f3-a354-2e10b41388f8" alt=""><figcaption><p>FIGURE A.1 - RM1200 shown with 1.5" Adapter installed on input. </p></figcaption></figure>