Rain

[Jake_07]

Hi, its been flooding hear in aus and the beach i usaly get my water from has become a bit seedy from all the floodwater from the river. I was just wondering as my water tank is full, could i put a drum under the down pipe to get water for my fish tank. I was told the water from my water tank might have phosphate from rotting leaves but if it comes strait from the roof through the gutters down the down pipe into the drum will it be ok. my roof and gutters are made from tin will this effect it. or should i put buckets out on the lawn to catch the water. I dont want to buy a ro/di beacouse the beach water is fine unless it rains alot, all 3 lfs around my area get their water from the beach and one even sells it for AUS 30c a litre for people to lazy to collect it so it must be fine.