We have been adding a few soft corals to our tank recently so I decided to use the ultra low range phosphorus Hanna we have and it’s come back at 192ppm which I believe is 0.59
We currently have diatoms in the tank and have just been letting this ride out although we did add copepods and phytoplankton
Amonia- 0.19
Nitrite- 0
Nitrate 10-20
Alkalinity - 8.6
Phosphate 0.59
How much should I be concerned? I’m not keen to do a massive water change or anything to upset the tank more since we did add copepods change and added more corals on Saturday. But I’ll do whatever needs doing.
We have a 65l tank with a hang on back filter, now running carbon since introducing leathers.
Biospheres in mesh bag on sandbed.
The zoas were added on Saturday and most of them have opened apart from one or two heads, neon cabbage is large and bumpy, Xenia open and pink. The only one that hasn’t opened fully yet is a toadstool which was added on Saturday and still slumped but has pollops showing when lights are on .
Two clownfish and clean up crew only
The only issue we’ve had recently is we had some Dragons Breath Macro Algae in it which we had to remove because it was yellowing.
We have some red bamboo macro algae also which appears to be doing well.
We have been feeding a tiny amount of TDO pellets in the morning and a tiny piece of gamma frozen brine shrimp or mysis in the evening.
Appreciate any advice! Thanks
We currently have diatoms in the tank and have just been letting this ride out although we did add copepods and phytoplankton
Amonia- 0.19
Nitrite- 0
Nitrate 10-20
Alkalinity - 8.6
Phosphate 0.59
How much should I be concerned? I’m not keen to do a massive water change or anything to upset the tank more since we did add copepods change and added more corals on Saturday. But I’ll do whatever needs doing.
We have a 65l tank with a hang on back filter, now running carbon since introducing leathers.
Biospheres in mesh bag on sandbed.
The zoas were added on Saturday and most of them have opened apart from one or two heads, neon cabbage is large and bumpy, Xenia open and pink. The only one that hasn’t opened fully yet is a toadstool which was added on Saturday and still slumped but has pollops showing when lights are on .
Two clownfish and clean up crew only
The only issue we’ve had recently is we had some Dragons Breath Macro Algae in it which we had to remove because it was yellowing.
We have some red bamboo macro algae also which appears to be doing well.
We have been feeding a tiny amount of TDO pellets in the morning and a tiny piece of gamma frozen brine shrimp or mysis in the evening.
Appreciate any advice! Thanks

