hello; My suggestion is to do a search on arowana. Several threads on the subject here. Best as I can recall some suggest a 300+ gallon tank for a lone adult arowana. Not sure what the minimum size may be. I also understand there are some varieties that get bigger than others so that is a factor to take into account.
Hello; One more comment. Chasing pH is a difficult thing. I stopped decades ago. My take is a consistent stable pH is better tolerated by a lot fish more than a regular flux in pH when you try to adjust it. I know it may limit what fish you can keep but it is so much easier to keep fish that tolerate your source water than to modify the water.
Totally agree on this point, chasing PH is like chasing a rainbow
You have to look at it differently, pH can be looked at a few ways -
- When you transfer a fish to a tank you're assuming the hardness you're transferring your fish into is the same hardness it just came from. When you wonder why fish aren't acting normal after transferring them you need to consider OSMOTIC PRESSURE.
- Cytolysis, or Osmotic Shock is what happens when the cell wall burst due to drastic changes in hardness. It's on wikipedia too.
- When breeding, or considering introducing trace elements for vitamin deficiency, nutrient solution, aquaculture, or whatever.. pH will be the difference in stabilizing // metals, bacteria, even disease.
When i change or adjust pH, I look at it as if I'm treating an ecosystem. Do you put tapwater straight into your tank? That's fine if u do but rather.. distill your water w/ the ketapang already in it. With the water container you're using to do a water change, let the leaves soak in there and only pour half of hat water at a time so all the ketapang jizz soaks up in the water container all the time.
I'm into aquaponics and when i do nutrient/ water change that's how i do w/ pH. Slowly but on point. If you want your plants to grow, use less chemicals, adjust your pH if u can based on the temperament of your fish.
that's why just use reverse osmosis water if u can