Ideas for a Large top up Reservoir

[Todd]

Jason - I have thought about useing a large drum like that, but I think I would like something that I could fit into the stand, beside and above the sump. I

Jason / Snappy - I have had this sump running for awhile and havent had a problem with the float (even if I did with the current set up it would likely only result in 4 g being added to a total volume of about 90g so it wouldnt do too much damage).

How would the float valve fail? It looks like a pretty simple set up with not much that could go wrong. That being said I should look into it before I change something so that I could end up with a 'fresh tank and salt floor'.