Why did my green water experiment turn red?

Edward Shave

Member
Joined
27 Aug 2018
Messages
49
Location
Kirk Langley, Derbyshire
Having seen it done on youtube I tried to make green water by simply placing some banana skin in a vase of mature tank water. No fish involved I hasten to add.
After a couple of weeks standing indoors on a south facing window sill the water turned wine red rather than green. Is this a red version of green water (algae) or something else?
 

dw1305

Expert
Joined
7 Apr 2008
Messages
10,430
Location
nr Bath
Hi all,
Is this a red version of green water (algae) or something else?
There is, it might be the resting spores of <"Haematococcus pluviatilis">, it is really common in water that dries out occasionally. I wonder if the water has warmed enough to instigate the start of the resting spore formation.

Production-process-1152x576.jpg


I've tried culturing it, because it is rich in astaxanthin, (I sourced it from our next door neighbours bird bath) but I've never managed to keep the cultures going for long.

cheers Darrel
 

zozo

Member
Joined
16 Apr 2015
Messages
7,368
Location
Netherlands
I once had to catch a number of Otocinclus, made a bottle trap with a Spirulina Tab in it.... It fell apart and after about 3 days the green spirulina pile colored completely red. :) Dunno why or how, tho it wasn't 100% Spirulina, according the label it also contained Clam meat powder.
 

Edward Shave

Member
Joined
27 Aug 2018
Messages
49
Location
Kirk Langley, Derbyshire
You were bang on Darrel. Armed with the info from your post I did some googling and I'm now sure it is Haematococcus pluvialis as you suggested.
Hadn't occurred to me until you mentioned it but my bird bath does this every year too. I have been told it does the birds no harm?

Many thanks
Ed
 

Similar threads

Top