Nijesseni spawn vs cockatoo - question on egg hatching

[dw1305]

Hi all,

So i want a TDS of approx 25 - or 3 part RO water and 1 part tap (our tap is around 100 TDS). Then use leaves to lower the ph. How do people measure in units of microS ?

The quoted conductivity values are nearly always microS/cm, so if just see 80 microS, it means 80 microS/cm.

TDS is linear, so If you're confident in that your tap is TDS 100 and your RO is near zero, you can accurately predict the result of mixing the two.

I know my tap is TDS 100 +/- 10

Perfect, as @Ben Rhau says it should be a linear scale, I'd start with 10:1 RO:tap, you can always add more tap, but you can't take it away.

If you can set your TDS meter to conductivity? I would. If you can't, you need to find the conversion factor (may be called "cell constant"). It is likely to be 0.64, but it could be 0.5 (100 micros ~ 50 ppm TDS) if the major salt is likely to be NaCl.

cheers Darrel