Whats the salinity at your LFS?

[Jonathan lee]

So i have never tested the salinity of the coral tanks at my lfs for over 10 years now thinking the corals will be kept at 1.025-1.026. I would sometimes just drop them in the tank pro problems. Sometimes drip for 30 mins. I know the fish are kept at a low salinity to save money on salt but i got a shock when i tested coral tank water from two shops today. One was 1.015 and another 1.018. I didn’t believe it so I tested with a second refractometer and its the same. I calibrated them and tested again, same. Can corals live at that salinity? The corals in the shops have been there for months to a year already. Its basically the same salinity the fish tanks are too.

Curious what salinity your Lfs keeps their coral tanks at.

 

[KING KONG]

curious what salinity your Lfs keeps their coral tanks at.

My lfs keeps 1.023 for corals and 1.016 for fishes.
Corals needs 1.024-1.026 salinity for survival but some can live as low as 1.016 as I hv kept them in my tank and i keep Salinity at 1.016 but in that range, your coralline algae will suffer so, it is more harm than good.

 

[Jonathan lee]

My lfs keeps 1.023 for corals and 1.016 for fishes.
Corals needs 1.024-1.026 salinity for survival but some can live as low as 1.016 as I hv kept them in my tank and i keep Salinity at 1.016 but in that range, your coralline algae will suffer so, it is more harm than good.

The lfs coral beds are covered in purple coralline. The pvc pipes and egg crates are covered. Im surprised the salinity is kept that low. Sps, lps, softies all in there too. All looking really good at that salinity. This lfs basically grows coral(mostly sps and zoas) to frag and sell. Means the corals are growing at that 1.015 lol

 

[Nano_Man]

LFS is 1.025 coral. Fish a lot lower

 

[Jonathan lee]

LFS is 1.025 coral. Fish a lot lower

Thats what i thought most would keep their coral systems at but mine definitely dont keep it at 1.025. Im gonna test another shop soon. Interesting how these 2 shops keep their coral systems same as their fish systems