Urchin spawn cause a PH spike?

[subman]

I have 2 long spine urchins and they spawned today. I noticed that my PH has spiked to over 10. It has never been over 9 before today. Could the spawn cause this or should I look for another reason?
Thanks

[subman]

Nevermind re calibrated the probe and 8.02:redface:

[Navarchus]

Nevermind re calibrated the probe and 8.02:redface:

Dont :drinking:and test PH :wink:

[subman]

Lol :crazyeye: