Rust in old water pipes? Answered
The house I moved in to still has galvanised steel pipes for all water connections.
The rust and deposit build up is so bad that with a pressure nozzle on the garden hose I reach aroun 20m from the tap near the mater meter
but only around 5m in the backyard.
To make things worse these restrictions affect the hot water.
If I open the hot water tap and then open a col water tap the hot slows and then the flow fully stopps.
The landlord already stated he has no intentions of replacing the pipes at this stage as it is quite costly.
The possible solution:
I was thinking of flushing the system with oxalic or phosphoric acid to break down rust and deposits.
Has anyone tried this and has some feedback on how good or bad it worked?
Do I have to fill the entire system with the acid or is it enough to get a few liters in and hope it will spread/dilute through the system within 24 hours?
Is it advisable to use a bucket and aquarium pump (probably something stronger) to circulate the acid through the pipes?