The drains in flood tables often block, if you don't keep plant pieces and dirt away from them with a prefilter.
After you have drilled a hole into the flood table you affix the prefilter together with a reducing spout to the hole. At the reducing spout you attach a normal hose connector with a 1.9cm (3/4 inch) thread. To this you connect the 20er hose.
Sounds easy? - Yes it is.
You should use a thread seal tape to seal the connections waterproofed.
Prefilter, reducing spout and hose connector are available in the drain-kit.
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