Phosphorus 0?

[kevinf]

Hopefully this is the right area to post

Back into the hobby after 10+ years. 30L Tank has been up since August (fish added in October).

2 clowns
Tailspot blenny
Pistol shrimp
Watchman goby
Snails/Hermits cuc
Octospawn
2 torches
3 zoas
2 yumas
All small corals

Running ;
UV
Skimmer (just started the skimmer this week)
Chemipure blue

Water changes weekly. 5 gallons(probably excessive for 30l)

Temp 78
pH 8.1
Nitrates 4ppm
Alk 6 (I know low for some reason)
Don't have a calcium tester yet
Phosphorus ULR tested tonight 0 (first time having the right regents)
Red sea blue bucket salt
TDS 0

I have algae growing on my glass/sand/rock. Seems to be brown but it's not terrible.
I feed frozen reef frenzy/rods and pellets (spot feed but I feel like I overfeed regardless )

Anyway, should I be concerned that my phosphorus is 0. These were all tested with hanna checkers. Skimmer probably working to well? It is skimming wet. Haven't adjusted it yet. Letting it break in

Here's a short video of the tank go show the algae

 

[Pistondog]

Po4 at undetectable is bad for corals.
Id switch from the chemipure to rox 0.8, i dont think blue has gfo though.

 

[Timfish]

Yes, you should worry about PO4 being low as it can cause problems with coral photobiology. And FWIW, Hanna checkers only check for PO4, he ULR Phosphorus tester just converts the PO4 number to it's P equivalent.

What is your N/P ratio?

I do not think it is desirable or even sensible for reefers to think of nutrient target levels as ratios. It just serves to lead to false conclusions. It is never wrong, and usually far more informative to discuss the absolute levels of each. For example, does it make any sense if N is very...

www.reef2reef.com

 

[kevinf]

Yes, you should worry about PO4 being low as it can cause problems with coral photobiology. And FWIW, Hanna checkers only check for PO4, he ULR Phosphorus tester just converts the PO4 number to it's P equivalent.

What is your N/P ratio?

I do not think it is desirable or even sensible for reefers to think of nutrient target levels as ratios. It just serves to lead to false conclusions. It is never wrong, and usually far more informative to discuss the absolute levels of each. For example, does it make any sense if N is very...

www.reef2reef.com

I'll retest tonight. It was my first time using that tester.