Best ATO for Red Sea 750

[EHaddad]

I was wondering what everyone has for an Auto Top Off. I have a Reefer 750 and am wondering what everyone has and what they recommend. I am currently looking at the
Osmolator Universal 3155 Auto Top Off - Tunze from @Bulk Reef Supply.

 

[gentlefish]

Also 750. Initially used the float valve. That got stuck in off a few times so I added the Tunze3155. I attached a 3/4 tube to the return line and fill in the top opening of it.

 

[Bulk Reef Supply Verified Sponsor]

I was wondering what everyone has for an Auto Top Off. I have a Reefer 750 and am wondering what everyone has and what they recommend. I am currently looking at the
Osmolator Universal 3155 Auto Top Off - Tunze from @Bulk Reef Supply.

Probably no surprise to anyone, but we're using the Tunze Osmolator 3155 on our Reefer XXL 750 as well. The 3155 is our go-to ATO system for almost all tanks here at BRS.

 

[EHaddad]

Probably no surprise to anyone, but we're using the Tunze Osmolator 3155 on our Reefer XXL 750 as well. The 3155 is our go-to ATO system for almost all tanks here at BRS.

Could you use a 55 gallon brute for the reservoir?

 

[fuelman]

tunze 3155 here i have 4 of them tried a few others early on but ended up with the tunze replacing them.

 

[Bulk Reef Supply Verified Sponsor]

Could you use a 55 gallon brute for the reservoir?

The challenge there is making sure that the water level in the freshwater reservoir is lower than the output of the ATO tube so that you don't end up creating a siphon.

 

[EHaddad]

The challenge there is making sure that the water level in the freshwater reservoir is lower than the output of the ATO tube so that you don't end up creating a siphon.

So I would need the barrel to be lower than where the ATO outlet is?

 

[gentlefish]

Could you use a 55 gallon brute for the reservoir?

Yes but the water level is higher than the sump. You would need to install the Tunze line into the DT overflow.

 

[RGoltz]

I use the Tunze 3155 with a Geo’s Reef 10 gallon reservoir. The pump is naturally slightly lower than the sump (due to the stand) and I zip-tied the outlet to my return pump tubing to give some additional height and provide an air break. Works all day and twice on Sunday!

 

[ajtomase]

I was wondering what everyone has for an Auto Top Off. I have a Reefer 750 and am wondering what everyone has and what they recommend. I am currently looking at the
Osmolator Universal 3155 Auto Top Off - Tunze from @Bulk Reef Supply.

What made you choose the 750 instead of the 625? I'm looking at either of those two tanks for my first tank and I can't make up my mind which to get. Were you worried about if any of the past issues of the previous versions of the 750 tank come up?

 

[Bulk Reef Supply Verified Sponsor]

What made you choose the 750 instead of the 625? I'm looking at either of those two tanks for my first tank and I can't make up my mind which to get. Were you worried about if any of the past issues of the previous versions of the 750 tank come up?

Ryan wanted the "tang gang" in that tank to follow WWC's method, so going with the 750 (which is 1 foot longer than the 625) just made sense. We've had no issues with the tank itself. Red Sea now ships these stands with an extra brace, which seems to have really help with that past issue.

Edit: Whoops, looks like that question wasn't for us. Either way, that's why we went with the 750 :D

 

[ajtomase]

Ryan wanted the "tang gang" in that tank to follow WWC's method, so going with the 750 (which is 1 foot longer than the 625) just made sense. We've had no issues with the tank itself. Red Sea now ships these stands with an extra brace, which seems to have really help with that past issue.

Edit: Whoops, looks like that question wasn't for us. Either way, that's why we went with the 750 :D

Thanks! I need all the advice I can get!! Huge fan of you guys!