Xebadir
Fishaholic
Have you tried mixing the water to temperature from your tap? I know this isnt easy but for my small tank(and melbournes cold water supply) I do this. Dechlorinating by the bucket method would work but may be unecessary: ive read many members of this forum just add the water and rely on the large surface area and filtration to remove the chlorine : just remember you have to transfer it from that vessel to the tank though: water changes will be difficult. Have you looked at what sort of modifications you are going to have to make to your water before you add it to the tank.
How about the size of your sump: how do you plan to maximise the filtration capability to keep water conditions high for such large and messy fish.
I dont know if this is a wise idea but might be something to think about: have a chamber in the sump that you can purely use for water changes: siphon out the waste water as per normal, and add tap water directly to this chamber which has a heater, and outlets into the sumps filtration system. This would allow further time to dechlorinate before exposure to the tank itself. When changeover is not occuring this chamber could be closed off and the heater switched off. Dunno, just a thought.
How about the size of your sump: how do you plan to maximise the filtration capability to keep water conditions high for such large and messy fish.
I dont know if this is a wise idea but might be something to think about: have a chamber in the sump that you can purely use for water changes: siphon out the waste water as per normal, and add tap water directly to this chamber which has a heater, and outlets into the sumps filtration system. This would allow further time to dechlorinate before exposure to the tank itself. When changeover is not occuring this chamber could be closed off and the heater switched off. Dunno, just a thought.