You do not need a special gutter for harvesting rainwater.
Rainwater collection from gutter to tank.
Centrifugal standpipe downspout filter collector with converter kit 899 95.
Collect rainwater for use in your home or garden with the gutter tank 250l water storage unit.
Rts home accents 50 gallon eco rain water collection barrel made with 100 recycled plastic spigot black 4 4 out of 5 stars 433 53 gallon portable rain barrel water tank collapsable rainwater collection system storage container water collector barrels include two spigots and overflow kit comes with 25 garden labels.
Also a roof washer a filtration system that removes any remaining leaves debris and bird droppings should be placed in the line before the water enters a storage tank.
Obviously your tank will remain empty without pipes that lead rainwater into your tank.
An additional filtration opportunity is with the installation of a rain head downspout filter that allows for a bit of self cleaning filtration options.
A first flush diverter helps to prevent the first flush of contaminated rainwater from entering the tank.
Before the water empties into the tanks a primary filter called a roof washer helps remove leaves and other large debris.
Seamless aluminum and vinyl gutters are fine.
1 dry systems and 2 wet systems.
Suitable for up to 32 gallons per minute flow.
Another rainwater filtration opportunity is with a tank screen that is installed on the tank entry point.
The inline centrifugal filter collector is installed vertically inline with a single rainwater downspout and can filter up to a 750 square foot roof area for irrigation toilet flushing car washing or other non potable uses.
To harvest rainwater you need to connect pipework to a downpipe from your roof gutter to your tank that water can flow through.