Following up on my previous review which I have requested to be amended. I have had discussions and advice received with explanations on what has gone wrong. Sadly the fish have suffocated, this is because the pump has been moved to far down to make it quieter by those in-house, in which was not allowing a break in the surface water, this has allowed a coloured oil like substance to form on the surface water therefor reducing the oxygen in the tank and suffocation of the fish. I would like to thank the guys for there help and assistance and offer my apologies for the earlier review. I’m gutted to have lost some amazing fish and trying to save them was in vain as the damage was already done. Lessons have learnt and would just like to say sorry, thank you and keep up the good work during these difficult times.