Crust in the lid of my tank

[ganjero]

WHat is it? and how can I avoid getting that white salt looking crust on the lid of my aquarium?

Thanks

[id10t]

Its the leavings from water evaporation - all those trace elements/minerals, etc.

[rich311k]

Vinegar should take it right off. Just don't clean it over the tank.

[Kasakato]

First try water and a toothbrush. Normaly I can just get it off with that.

[Jericho]

Sounds like you have hard water with a lot of minerals.

[Joele]

High GH???

[Kasakato]

High GH? As in the test result?

[ganjero]

High GH? As in the test result?

I better get a kit to test that, because my kit has ph,amonia,nitrates,nitrites.

[Kasakato]

It should me OK. KH and GH are two more extra tests. In short: KH tells you how stable the pH is, and GH tells you how many meganisms and calcium ions there are.

Just clean off the white stuff, and wait untill next time.

[Joele]

Most hardness test kits have both kh ang gh together.. Personally I like keeping an eye on the KH and maintaining it as if that is right your PH should be nice and stable...

I asked if the GH was high simply as it can cause the problem described, not a huge issue though, just clean it as others said (GH is very low in tap water here, but I guess that can be very different elsewhere)..

[aknif]

I scrub my glass tops once a month as part of my normal tank maintenance, to keep ahead of the white junk! If it's already built up, I take the item that it's built up on, remove it from the tank and let it dry out completely... maybe out on the patio or something in a sunny spot (Seems to me that drying it out first helps to loosen the crud) Then I soak it in a big bucket of hot water and white vinegar, preferably overnight. The next morning, the crud just wipes off or, at the most, with a little scrubbing with a tank scrubbie pad. Then rinse it really well to get the vinegar off. That's what I do, anyway!

:idea: