Buffering, but not rinsing coco?

I have washed the dust out of the coco I used, no sand found in the dozen or so bricks so far. What I hate about coco is the need for more frequent watering. Leaving in the dust will take the coco longer to dry out. Mind you the porous nature of it is what helps our grows. I would think there is a sliding scale to how much dust is left in and the watering frequency and grow rate.

Hi all. I gotta throw in my 2¢: Expanding & rinsing coir bricks is super easy. Get yourself two big (18-20 gallon) plastic storage bins. They sell them everywhere for like $10 - $12. Drill as many small holes in the bottom half of one of the bins as you can. Make it into a giant colander. Then, just put the drilled bin into the non-drilled bin and fill with water and soak the coir. Lift the expanded coir out and dump the run-off. Stir and repeat several times. I use this for the buffering soak too.

Hot Diggity Sog said:

The shower idea is really good. I'm on a septic system. I've been googling around to try and see if coco could be damaging to a septic system but I've found nothing. Any reason to be concerned about rinsing a couple hundred gallons of coco a year this way?

Click to expand...

I might think that the tiny fibers could get down into your leech field and start plugging the holes to drain off your excess water. Hair can do the same thing.