NP pellets and bleaching events

[lastlight]

Tony do bio-pellets work I just heard about these?

Even though I've sorta sworn them off I did plumb one extra outlet on my manifold just in case. You just had to mention the valonia DIDN'T YOU ?

[Bblinks]

Close to 14 months ago I started using np pellets which is the original people who came out with biopellets, for the first few month I slowly amped up the dosage to the recommended level without any ill effects. 6months goes by everything is looking fantastic, all the parameters are looking good with the exception of phosphate still hanging around 0.02ppm as per hanna checker, so i descided to run inconjunction with rowaphos which did bring my phosphate down to undetectable by the meter. At this time my parameters were 8DKH 440CAL 1300MAG 0NO3 0PHOS. few months later I switched from npx to vertex pellets and within a few weeks of switch several LPS(brian, blasto, acan...) SPS(acros, millis) started to bleach. a week goes by and 2 sps colonies rtn'd and the rest are still looking pretty bad. I tested my parameter and to be my suprise alk has jumped from 8 to 10.5 for some reason(might just be a stronger mix when I was doing the new batch but I really don't think so.) After talking to a few people on rc and albert from vertex they told me to lower my alk to around 7 and hope for the best. So now 4 months later the 2 rtn sps are dead but all the rest are on the rebound. Also if I might add I also noticed the k level was around 200 ppm which I aided with zeovit k balance which also made a huge difference.
Now with alk rock solid at 7 and k just around 400 mark I have no issue with add any amount of pellets. I like to dose a bit of zeobak to ensure that I don't end up with a mono strain of bacteria, but IMHO pellets work but you need to keep you alk in check and because it stripes out a lot of other vital elements like potassium you should test what you can and dose accordingly.
just my 2 pennies.