Welp, some hair algae started to take hold so tonight I pulled the trigger on the ONE-TWO PUNCH. Details delineated;
- 29gal tank w/ pressurized co2, based dose on 25gal water
- turned cannister filter off
- dosed 120ml h2o2 (3.2 tbsp/10gal)
- 15min of manually pointing a circulation pump around the tank to ensure no dead spots and adequate flow
- 50% water change
- triple dose Excel (45ml)
- turned filter back on
Of course, nothing to report on the algae front yet. I actually did an OK job manually removing the worst of it before 1-2 punching it. I didn't wait until it got beyond control, hoping to head it off.
seemed bored with my shenanigans this evening.
Black skirt tetras
were actively schooling around the tank, wondering when I was going to finish up and playing in the currents.
My cory cat
may have been a little bothered, or maybe just perking up - kept zipping up to the top and swimming around at different levels - didn't appear to be stressed.
couldn't care less.
My fancy guppies
, however, are indeed showing some signs of disapproval and stress. Especially the larger female yellow one. She zipped around the tank splashing the surface and freaking out a bit there toward the end of the treatment as I was finishing the water change. I don't know if it's my imagination but is the top of her head and front 1/3 of the top of her body bleached clear now? Or was it like that before? All the guppies are uncharacteristically huddled in the corner now, even 30 min after completion.
Will update with more, wanted to type this out while I'm thinking about it.
----update next morning----
cory cat is gone
4 black skirt tetras are gone too!
guppies are at the top of tank huddled together, not behaving normally but don't appear to be under acute distress anymore
----update 24hrs later----
came home after work to 1 more lost black skirt tetra - only 1 remains from the original 6
guppies are swimming at different levels now but still aren't their normal playful selves
neon tetras are seemingly unaffected - didn't lose a single one of the 8, and the albino pleco and snail are seemingly no worse for the wear
but nobody is terribly excited to eat - usually everybody comes a 'runnin at feeding time, but they're halfheartedly poking at the food
water in tank is a little cloudy after the treatment, when it was pretty clear beforehand
woke up this morning, last black skirt tetra is dead. they never showed signs of stress (that I saw)! maybe a little extra gulping but not hanging out at the surface or anything.
fancy guppies are still kinda timid but all are still alive
all 8 neon tetras, the snail and pleco appear completely unaffected.
maybe half of the algae hairs are white. i really hope the rest goes and isn't going to hang on after all this!
water still cloudy
did a 25% water change
as of this morning, the cloudiness seems to be clearing though it's a far cry from normal still.
guppies are back to normal, playing in the currents. neon tetras have been unaffected throughout, as have the snail & pleco. everybody is eating.
all water params are WNL, no mini cycle or anything.
95% of the algae seems to have been taken out. there's a couple areas that I'll spot-treat soon, but I want to see the tank fully recovered first and clear water.