This was a sump I designed and built for a friend. Was for a 900 x 900 cube. Works perfectly and was designed in such a way to maximize refugium size but cater for all equipment as well as ato ro water.
I have as well, based in Midrand. Pm me your number if you interested.
@RandburgRicky I would also be interested if they are different to mine. Please pm me your number and I will contact you. Obviously if there are any left after @kbyclown as I don't want to hijack his thread...