I consider shipping when pricing at item on Amazon. The one being sold for ~$50 has a $10 shipping charge. So still about $60. For $2, I would rather have it sent by Amazon (via third party vendor, but stored in Amazon Warehouse). I probably order 100's of items from them a year and the only time I ever have a problem is when it's through their third-party vendors.
The sizing for the Hydros are pretty easy to understand.
From Hydro II-V, they have a height of 4" and a diameter of series + 3/4"... So a Hydro IV has a diamter of 4.75" and a Hydro V has a diamter of 5.75".
Whether that's 'big' or not is really up to you... But two 6" diamter sponges takes up a lot of realestate... a footprint/Area of 8.26pi sq-inches per sponge. I couldn't find a 60G dimension, but for a 55G, that's almost 10% of the bottom of the tank!
Eric
I took my Hydro out for that exact reason AND because food was always going under it and the fish could never reach it. Went with 2 "clip-on" style sponge filters that have suction cups so they can be out of the fishies way but still provide oxygen and beneficial bacteria.
Joey!
Something like this mgiht work... you can get it at Kenfish.com and a few other places. I bought a knock-off on eBay. Works okay I think... I ended up cannibalising it to make pre-filters for my AC110s though. I used to hide it behind decorations.
Eric
Yup! 2 of the ones Eric posted the image of. One on the left and 1 on the right attached to a Fusion 700 air pump.
Joey!
Also remember if you haven't already you can sign up for amazon prime shipping and 2nd day shipping is free. Next day is only 3.99. I that also included Saturday delivery. Just a side note. I have been able to find most everything I can get this way. It may seem more expensive but during the free 30 day trial the first one is free next day. The item is sometimes a couple dollars more but free 2nd day delivery makes up for that.
Stephen
Stephen
NADA AUSTIN 2014 SOS Crew Texas
yeah but two of those wouldnt work for the main filtration right?
Javier
So no one had tried the box filters?
Javier
Yup, I used to pay for it but they give it to students for free! Another reason why I'm going to be a lifelong student :P
I used to have one or two box filters. Someone else may be able to answer which is better, sponge or box filter. I know it's faster to clean a sponge filter though than to mess with the box filters. I think it's cheaper since you don't have to buy the box...
Yeah, I'm so cheap, I'm always trying to think of ways to buy one thing and use it for another. I bought some reusable filtration material for HVAC and I cut it up to use for my HOB filters. Not only does it cost like 1/100th that of the stuff the manufacturer sells but I think it works better! I actually noticed a significant difference between using it and the stuff the mfg sold.
Eric
Someone mentioned box filters, I have made sponge filters out of box filters I had lying around, by filling the box full of sponge material. Works fine.
Darrell