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It's good practice to use a tap safe additive product but a few weeks without using it is unlikely to harm the fish. It's more important it has relatively clean and unpolluted water at the right temperature and some grub to eat.
To that end if the tank is near a window then lower the blind a bit which will shade the tank and hopefully marginally improve the water quality and pollutants in the tank.
Great, thanks. Will do, then I'll take it from there.
You should also punch whoever was responsible for getting it in the office and who then decided it wasn't their responsibility
Tell me about it...
It's good practice to use a tap safe additive product but a few weeks without using it is unlikely to harm the fish. It's more important it has relatively clean and unpolluted water at the right temperature and some grub to eat.
To that end if the tank is near a window then lower the blind a bit which will shade the tank and hopefully marginally improve the water quality and pollutants in the tank.
You should also punch whoever was responsible for getting it in the office and who then decided it wasn't their responsibility