For excellent drainage and an oxygen-rich root zone, use Seramis.
It’s a light, airy, clay-based growing media that’s very porous. This means it holds hardly any water but lots of air (hello, oxygen!). Good luck overwatering – it just won’t happen. Drainage is amazing!
Seramis won’t affect your nutrient solution – granules are pH neutral and have no nutritional value.
Seramis is popular in hydro & drip systems (like Wilma)…a lot of growers also use Seramis as a top dressing to keep coco & soil moist (blocks out light).
Seramis is reusable once cleaned – now that’s bang for your buck!