Could Seachem Kalkwasser kill my bryopsis?

TankCla · 05/02/2014, 06:49 AM

I have been dosing seachem kalkwasser for 2 weeks now, and I noticed that bryopsis algae is turning white and loose.

Could raising ca(440) and alk(11), be responsable for killing the nasty bryopsis?

I have to mention, I am dosing with my ATO and in the mixture I put 15g of vinegar per teaspoon of kalkwasser.

PO3 is undetectable and NO3 is 0.2, but they are like this for a while with no effect over bryopsis. Since I started dosing kalkwasser, for my growing stock of sps, I noticed a slow down in bryopsis growth, and yesterday all tips where white and filter sock full of discolored and bleached loose algae.

bertoni · 05/02/2014, 10:31 AM

The vinegar might be acting as enough of a carbon dose to starve the Bryopsis. That'd be my first guess. I haven't heard much in the way of reports that calcium and alkalinity will kill Bryopsis, although some magnesium supplements seem to do so.

tmz · 05/02/2014, 10:51 AM

FWIW, I use kalk 24/7 and vinegar too. Calcium runs around 470ppm with alkaiity at 9dkh ;ithat been as high as 11 dkh. It has no effect on bryopsis ,IME. Undetecable PO4 might get it at some point but that point may be low enough to harm corals;bryopsis seems to tolerate low PO4 well compared to other nuisance algae.

TankCla · 05/02/2014, 11:32 AM

Thank you guys for your fast reply!

Corals are ok with low PO3 and NO3 . Alk is high from Red Sea Coral Pro. I changed from IORC two months ago, because alk was 5 dkH.

There are many coincidences here, changing salt, changing feeding schedule, kalkwasser + vinegar.

Red Sea also has high levels of Mg.

05/02/2014, 06:49 AM	#1
TankCla SPSychology Join Date: Mar 2012 Location: Golden Horseshoe Posts: 169	Could Seachem Kalkwasser kill my bryopsis? I have been dosing seachem kalkwasser for 2 weeks now, and I noticed that bryopsis algae is turning white and loose. Could raising ca(440) and alk(11), be responsable for killing the nasty bryopsis? I have to mention, I am dosing with my ATO and in the mixture I put 15g of vinegar per teaspoon of kalkwasser. PO3 is undetectable and NO3 is 0.2, but they are like this for a while with no effect over bryopsis. Since I started dosing kalkwasser, for my growing stock of sps, I noticed a slow down in bryopsis growth, and yesterday all tips where white and filter sock full of discolored and bleached loose algae. __________________ Thanks! Claus Current Tank Info: 75 gal mixed reef, 29 gallon sump, 6x54W(Giesemann) T5HO, Tunze 9410, 2xJebao RW15, Tunze Silence, DIY ato, RKE Titanium

05/02/2014, 10:31 AM	#2
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	The vinegar might be acting as enough of a carbon dose to starve the Bryopsis. That'd be my first guess. I haven't heard much in the way of reports that calcium and alkalinity will kill Bryopsis, although some magnesium supplements seem to do so. __________________ Jonathan Bertoni

05/02/2014, 10:51 AM	#3
tmz ReefKeeping Mag staff Join Date: Apr 2006 Location: West Seneca NY Posts: 27,691	FWIW, I use kalk 24/7 and vinegar too. Calcium runs around 470ppm with alkaiity at 9dkh ;ithat been as high as 11 dkh. It has no effect on bryopsis ,IME. Undetecable PO4 might get it at some point but that point may be low enough to harm corals;bryopsis seems to tolerate low PO4 well compared to other nuisance algae. __________________ Tom Current Tank Info: Tank of the Month , November 2011 : 600gal integrated system: 3 display tanks (120 g, 90g, 89g),several frag/grow out tanks, macroalgae refugia, cryptic zones. 40+ fish, seahorses, sps,lps,leathers, zoanthidae and non photosynthetic corals.

05/02/2014, 11:32 AM	#4
TankCla SPSychology Join Date: Mar 2012 Location: Golden Horseshoe Posts: 169	Thank you guys for your fast reply! Corals are ok with low PO3 and NO3 . Alk is high from Red Sea Coral Pro. I changed from IORC two months ago, because alk was 5 dkH. There are many coincidences here, changing salt, changing feeding schedule, kalkwasser + vinegar. Red Sea also has high levels of Mg. __________________ Thanks! Claus Current Tank Info: 75 gal mixed reef, 29 gallon sump, 6x54W(Giesemann) T5HO, Tunze 9410, 2xJebao RW15, Tunze Silence, DIY ato, RKE Titanium