sea

Hi everyone,   I have had this lovely sea urchin thrown into my care. I wasn't planning on having any for quite some time but alas I have one.   I know the set up, general care, salinity, all that good stuff for salt water inverts and tanks. But I was wondering if anyone knew what species/kind...

Hi, just a query.   Ive rebuilt an 80l freshwater tank, new substrate but lots of the orignal plants and an oversized hob filter with lots of mature filter media. Been cycling with a 50/50 mix of old tank water (from my 150l tank's water change) and new de-chlor tap water.   I used a load of...