Sorry to hear about the RTN guys - that was a real beauty Marc
I also have had no RTN with prodi or any other product (only one frag RTN'd after overnight shipping when I started to drip aclimate it) - and from what I can gather - we dont really understand what causes it when the main parameters are all in line. Does anyone here know otherwise?
A difference between Prodi and the zb4 is that zb4 can be more finely tuned for net volumne but even that method has reports of RTN if not very carefully dosed.
This may not apply to your experiences, but slowly slowly is the general principle to making changes with the zeo or Iwan hybrid methods. Less is more.
Marc and Pangea - have you ever had RTN before? What is the alk,mg,ca, ph picture? Were the sps moved recently before the event? Had flow changed prior to the RTN? Was prodi dosed accurately to net volumne? Any other system, livestock or additive changes?
Johnathen - Booster has oils in it too which also significantly dampens skimmer bubble formation - lasts overnight then the effect is gone. Its it OK now?
Carlab and Pangea - any before / after pics to share please?
Cheers
Simon