Its not been a good week with my tanks. Found cyanobacteria in my betta girl's tank.
I tore down the 2.5g and sterilized it and re did it.
Tossed all of the plants in the tank. Not risking reintroducing cyano again. Not a problem as i have enough salvinia to fill a swimming pool at this point
I drained all the water, tossed the driftwood, boiled all of the rocks. Removed the sponge filter and left it to dry out completely and not to be reused again for a long while.
I put together a new filter using a bottle filled with media from my other tanks, including a new sponge taken from other tanks. So totally cycled media, but just new to this tank. Went with the bottle design for the air powered filter to increase surface agitation. Inserted air tube into the bottle, holes drilled into the lid of it to let air and water out, holes in the bottom of the bottle to suck water in. Crude finger drawing of this included.
Sand was rinsed with boiling water, rinsed with cooler water, added back. Tank was scrubbed with hot water as well.
New water added was boiled indian almond leaf water mixed with water taken from another established tank. Kept my tannins while also keeping some good water for stability.
Heater was scrubbed and reinstalled (black cord, since the mini heater is hidden).
Leaves and hornwort were added. Then a small and contained bit of new salvinia was added. I contained it using a loop of drinking straws to create a floating barrier. This way i get some floaty plants but not as much that it obstructs surface flow so i dont encounter this issue again.
Since i lost all established biofilm with sterilization, i had to move my nerite snail to another tank so he had food.
Tank is still a bit cloudy from the sand being stirred up with refilling, but its back up and running. Process took me about 1.5 hours.