Using a gravity feed system is beneficial as solids get fed straight into your filter system for removal and not liquidised into fine particles, as with a pond pump. The finer the particles the harder it is for your filter system to remove them, resulting in poor quality water. The 56mm outlet on the 4″ x 2″ bottom drain provides a high flow of water, giving a good “draw”, removing debris from across the bottom of the pond.
Where to Locate my Bottom Drain?
Bottom drain setups are much more efficient than having a pump feeding a filter situated in the pond. Bottom drains can handle larger solids than most types of pond pumps and are far less likely to block or become hampered by debris.
The sump is supplied with a flange ring that can be screwed to its top lip. If the pond is liner based, the liner should be sandwiched between the flange ring and the sump lip and adhered with a non toxic sealant, creating a watertight seal. If the pond is constructed from concrete the flange ring is not required. The top of the sump should be set level with the pond’s final rendered layer. A gap of usually around 2cm to 5cm is set between the top of the sump and the dome and should stop smaller pond fish from entering the filter system.
To obtain a maximum flow rate and reduce the build up of debris in the pipework, when connecting the bottom drain to the filter, the pipes should run as directly as possible and any bends should have a large curved radius.
For more information on our weighted suction dome range please see our Product Archive.
Reducing the Bottom Drain Sump
This 4"x2" Bottom Drain Kit will also be suppled with a 56mm-50mm reducing bush. This will reduced the sump socket to receive solvent weld pipe/fittings with an outside diameter (OD) of 50mm.
If the application of 43mm solvent weld pipe is needed, eco-filtration stock a large range of reducing/joining bushes. We sell a 56mm – 43mm reducing socket purposely designed for the job. This will convert your standard 2” waste (56mm) bottom drain sump socket to receive 1.5” waste pipe (43mm). Please see our Product Archive for further details.
This item comes supplied with:
Why an Aerated Bottom Drain?
The benefit of having an aerator on your bottom drain is the rising air bubbles makes an uplift. This circulates the water towards the bottom drain making it up to 30% more efficient at removing debris and waste from the pond. Not only does it help with the performance of the bottom drain but also aerates the water making for a healthier environment in your pond.
For more information please view our Product Archive.