Mini-cycled

[Zoaelite]

Originally Posted by Myka

Water changes won't cause a cycle. You can try reading through the algae info in my signature. Lots of info on controlling algae (and cyano) there.

+1, This is because most of the bacteria which establish your tank are in your sand/ rocks. Doing a water change really only dilutes pollutants and should not cause any mini cycles.
Levi

[i have crabs]

only reason i could guess is if you stirred up your sandbed while adding the new water, other than that i dont see anyreason you could get anytype of cycle from changing water,
like i said in your other thread, dont use phosguard with any leathers in your tank, they usually live but sometimes they dont recover,

if you have any prime, add a cap of that it will detoxify the amonia/nitrite just for a bit extra saftey, if you dont have prime i wouldnt worry about it.

do you use ro/di water? what do you feed the tank?

[Sparkfarmer]

I went out and bought a gfo and I will replace the PhosGaurd (Al based too) tonight. I do use ro/di water and I feed a mix or blood worms, brine shrimp in garlic. I did blow off the rocks with my turkey baster a lot when I did the water change. Maybe thats what happened. Hope everything will weather the storm.....