Find contentG'day & thanks for the information provided above, it's a great help!
Q: Can I put sandstone rock in the tank?
I have 4ft(l)x1.5ft(w)x2ft(h) with a Whale 500 running.
I've sourced some pieces from a local coastal area north of Broome (they're awesome looking!) about 1km inland from the ocean. Well sun baked and haven't been 'ocean' wet for about 50,000 years. I've had them soaking in an eski in fresh water for couple days now, bit of grit comes off when rubbed but that's normal for sandstone. There's been no floating 'vermin', no weed attached & the water doesn't taste salty at all .
Hope this doesn't seem too silly a question, I don't wanna stuff up the water quality in my tank before I get to put fish in so any advice is appreciated 
