FlytrapCare Carnivorous Plant Forums

I"m feeling very proud 167X10. 1670 PPM ! 235 on tap water sink. I didn't filter the water when reading with the TDS. I'm gonna wash it about 10 times or so.

After 10 hours of soaking in a plastic bucket and changing the water, the TDS reads 516, again with the coir in it. You must calculate the difference than. For example, after multiple soakings, the TDS will read for example around 250. You will know that it reads only the tap water + some left overs from the coir. In the end, i will wash it with distilled water, so it will read about 20 or less. It will alway read in the end 20 or less, if you read the TDS in water + coir (it reads the small particules).
Method :
I put my both hands in the bucket and squizing the coir dry, i put than in another plastic container. Than i get the coir and put it again in the bucket, puting another water in again. After a couple of hours swirl the coir in the bucket for about 15 seconds.

After 16 hours of soaking in a plastic bucket and changing the water, the TDS reads 285. Being that it reads 235 on tap water sink, they are difference of 50 PPM left. 50 PPM left is the impurities/minerals from the coir. I will soak it one more time.

Im confused. Are you testing the water after soaking in the coir? I thought the meters test based on electricity resistance. Wet coir would certainly resist. I also thought that coir was essentially inert, save for some salt absorbed during the drying process. That might be what you're reading... salt content.

I tested the water + with the coir in it. And salt content is what i'm reading. After every soaking i change the water with new tap water.

Cool deal, keep up the good work. I've been thinking about starting a micro greens indoor garden using only coconut coir as a medium. Love that 10x10x1" brick explodes into like 7-10 gallons.

I'm curently using for my drosera species 1 part coir/ 2 parts quartz sand (3 mm diameter) with white sand on top (0.3 mm diameter).