In reply to Kevin …. while you don’t HAVE TO HAVE a heater it makes things go faster. And it sound like you dodged a bullet with the insecticide. Modern insecticides are very toxic to fish.

48 hours or so nothing seems to happen though I feel the adult angel pair seems to eat less/throw away the food. While the rest of the community are very active.

Water parameters fine except for the cloudy water at thick white intensity.

If ever I need to redo everything in the future, hopefully not, one thing regarding your cycling process,

do I need a heater for cycling filters?(fishless)

Room temp at 20-21deg C (68-69 deg F).

Thanks in advance Dave.

In reply to Kevin …. After 24 hours it is too late to do anything. Just keep on trucking and hope for the best.

Immediately I noticed there of “fumes” coming out from the side of the wall that seems to goes on top of the water column and falls into the water inside the tank. I was surprised of the fume because the powder is like baking soda in texture.

I am using pifpaf insecticide powder with 0.05% W/W of deltamethrin as per label and the rest 99.5% W/W of other ingredients not disclosed.

After 24 hours nothing seems extraordinary all fish are eating and alive but I have read online about 1 abstract study saying deltamethrin is highly toxic to fish under lab test at 0.001 mg/liter concentration of insecticide to tank water. They used an insecticide of 2.8% EC of deltamethrin in their tests. And after 96 hours their test fishs died depending on test concentration level.

Now I am in the middle of fish-in cycling. After 1 month of cycling I am still with 95% cloudiness (milky) intensity and you have replied in my comment in your cycling article not to change anything and just reduce feeding.

Hence I am hesitant to do water changes or run carbon.

Can you kindly advise what should I do? I am at a loss and I do not want to restart my cycling all over again.

Thanks in advance for your response.