Running a skimmer WET/DRY

[Aqua-Digital]

Silicates will be a great food source for Cyano.

But I still say you have had a nitrate spike while you were away (as per our phone conversation)

Go get another nitrate kit and try the test again.

Failing that you will have the Lith rock soon for complete tank stability and with that i will send you ultra Life, your cyano will be history then!

I would suggest dry skimming