Is this normal?

so i ended up ordering the dual ato that brs had. now i need a pump and an sl1 or sl2. they had the sl1 i believe but im leaning twards getting the sl2 because it has the port for the salinity prob with id like to have over the orp probe. anyone have an sl2 to sell? if not maybe ill get an sl1 if someone has that?

i noticed the toms aqua lifter ben mentioned, i seen it on amazon for $16 and its a 3.5gph flow rate to 30 inches height. sound like what i need?
 
The SL2 will be great if the salinity probe was in the market and worked.

You are better off with the SL1 IMO

Yes, the aqua lifter is what you want to top off.
 
What's the story on salinity probe? I wasn't thinking if getting it till further down the future. The sl2 not ever available?
 
New idea. Someone gave me an idea of gravity fed top off. Instead of having a pump push the water, set the container of ro higher then the location the water is going into. Still having the tube of incoming water connected to a switch. Once the switch is at a lower level it opens and allows the water to be fed in. Stopping once the water level is high enough and closing the incoming ro water. Ideas? Opinions? Would that still work using my digital aquatics ato I bought?
 
Cub21rak said:
New idea. Someone gave me an idea of gravity fed top off. Instead of having a pump push the water, set the container of ro higher then the location the water is going into. Still having the tube of incoming water connected to a switch. Once the switch is at a lower level it opens and allows the water to be fed in. Stopping once the water level is high enough and closing the incoming ro water. Ideas? Opinions? Would that still work using my digital aquatics ato I bought?
Click to expand...

Sure, this works. There wouldn't be a need to use a pump or the rkl.
 
The salinity probes is expensive and not super accurate. I don't think it will replace a refractometer. I run the sl1 with an aqualifter without any problems. I wouldn't run another tank without a RKL. The ph prob will help with kalk drip setup. I like the idea of a 30 sec timer on the switch setup, but I'm insure how to program it.
 
Cub21rak said:
New idea. Someone gave me an idea of gravity fed top off. Instead of having a pump push the water, set the container of ro higher then the location the water is going into. Still having the tube of incoming water connected to a switch. Once the switch is at a lower level it opens and allows the water to be fed in. Stopping once the water level is high enough and closing the incoming ro water. Ideas? Opinions? Would that still work using my digital aquatics ato I bought?
Click to expand...

Ppl do this with a horizontal switch, but tank must be drilled.
 
I'd stick with a pump and float switches personally. Gravity fed just means if there's a failure, your entire water supply is in the tank and floor. With the pump system, it will tell you on the interface if a switch is low or not.
 
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