- 13 Apr 2014
Thanks all for the above.
That was an interesting water change.
After water change - 228 TDS
After Prime, Excel, 2 tsp of K2SO4 (and yes this made my PH drop from 6.8 to 6.2 as normal - who knows why), 4 tsp of Epsom Salts, and 2 tsp of Gypsom - 515 TDS (also been hanging 2 small bags of crushed coral over the side of the tank for 30 minutes - I take it out after 20 hrs).
I'll add some KNO3 and KH2PO4 in the morning and no doubt be back up to where I started.
Yep that lot would do it!