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So just in case anyone is interested. I live in the Caribbean and collect nsw for most of my water changes. I collect it off of a beach down the hill from my house where I go snorkeling. There are several types of entrusting as well as branching coral growing about 20 feet off the beach from where I collect. Not full blown reefs but more scattered smaller pieces due to the beach being a very popular swimming and boating area. I collect on the incoming tide usually on weekday afternoons due to the boating traffic being mostly on the weekends. I've been doing this for several years and haven't really had any issues from this practice that I know of. The only adjustment I make is to the alkalinity because I like to run my tanks at around 8 dkh. I tested the water that I collected this weekend just out of curiosity and the parameters are as follows:
Salinity- 1.026 - Millwaukee refractometer.
Nitrate- Undetectable-Red Sea
Calcium- 400- Red Sea
Magnesium- 1440-1450- Red Sea
Alkalinity- 7.3- Hannah
Phosphate-.02- Hannah.
This is where I collect.
Salinity- 1.026 - Millwaukee refractometer.
Nitrate- Undetectable-Red Sea
Calcium- 400- Red Sea
Magnesium- 1440-1450- Red Sea
Alkalinity- 7.3- Hannah
Phosphate-.02- Hannah.
This is where I collect.