Low tests

[lewis74]

Got no fish just coral and 2 shrimps just did a water change All my fish died 4weeks ago from white spot . Just did a test.
Alkalinity 6.5
Nitrate 5.0
Phosphorus 0.00
Any advice on how to get them back up ?

 

[Nor'easter Reefer]

Got no fish just coral and 2 shrimps just did a water change All my fish died 4weeks ago from white spot . Just did a test.
Alkalinity 6.5
Nitrate 5.0
Phosphorus 0.00
Any advice on how to get them back up ?

Water changes for alkalinity should do it. If you had more of a coral demand, than I might suggest dosing but water changes will help for quite awhile. A quick search can also find out which salts measure to where you'd like to be. I currently use instant ocean reef crystals but will be switching soon so as to have a salt that mixes closer to my target range. Pick most any salt that mixes close to your desired range and fits your budget.

Nitrates are low ish if your going for LPS/softies, feeding more or knocking down filtration a little should help. Think, skim dryer(darker thicker skimmate) let filter socks sit longer before cleaning, and phosphates typically can be brought up with some sort of high nutrition value pellets/flakes.