Need advice on bulkhead use and placement in 57g rimless - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 02-07-2011, 08:36 PM Thread Starter
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Need advice on bulkhead use and placement in 57g rimless

Hi all--

(I posted this in tank journals but got no responses. I'm hoping that posting here will have better results).

I've been looking for an Oceanic Illuminata for some time, and finally found one, but it's the non-drilled variety. I'm wondering if I can drill the back glass near the bottom and plumb the tank that way. See the attached pictures.

I don't plan to paint the tank black, so I guess my questions are
(1) is this going to ruin the look of an otherwise pretty tank,
(2) how close to the bottom edge of the back glass can I drill (1/2" bulkheads, 1 1/8" holes)
(3) would 4 half-inch bulkheads be enough to accomodate filtering and water movement needs? I'll probably run an eheim 2217, and use one or two for inflows and two with loc-line for outflows.

Thanks in advance.
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post #2 of 9 (permalink) Old 02-07-2011, 09:35 PM
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First of all, make sure your aquarium isn't made with tempered glass. Often, contacting the manufacturer and hopefully getting correct info is the only way to find out (unless there's a sticker on the bottom).

Second, I don't think this will ruin the looks, on the contrary, not having pipes/hoses/tubes going over the rim will make for a very pretty tank.

Not sure how close you can drill to the edge. Keep in mind though that you need to prevent substrate from getting into the filter, so don't place them TOO low. Alternatively, you can drill through the bottom and extend the tubes through the substrate. But see first paragraph.

1/2" could work, especially if the filters you plan to use are not going to have more than 1/2" diameter hoses. However, to future-proof this you might as well go for 3/4", and use a reducer to connect smaller ID tubing. For example, the CFS500 filter which has recently gotten some publicity because of it's low price, has 1" hose diameter. Just something to consider. On the other hand, if you plan on using only one filter and split in and outflow 1/2 would be plenty.


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post #3 of 9 (permalink) Old 02-08-2011, 12:08 AM Thread Starter
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tempered...

The bottom is clearly tempered. It says so in etching right on the glass. I've seen other threads where people have drilled the back of these tanks without problems. Oceanic doesn't seem to have made these for very long, so I'm pretty sure that I'm ok.

I hear you on the future proofing, but those 3/4" bulkheads look giant compared to the 1/2" ones. Which of course is your point....
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post #4 of 9 (permalink) Old 02-08-2011, 03:55 AM
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Yeah so the bottom is out...

When you say "giant" keep in mind you are drilling a 1 1/8 hole to fit the 1/2" bulkhead, and you would have to drill a 1 3/8 hole which is - yes - just 1/4" larger. Really small, small difference.

Since you mention the 2217... it has a 16mm inlet hose diameter, which is 5/8", which would make your 1/2" bulkheads already questionable. Unless, like you mentioned, you will split/splice two into one.


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post #5 of 9 (permalink) Old 02-08-2011, 04:06 AM Thread Starter
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you're probably right

...okay, I'm convinced. If I DO drill it (and I'm not sure about that yet--the drilling doesn't scare me but I worry that four big black circles on the back glass will) then I'll do the bigger bulkheads. I have a nice stash of 1/2" locline that I'll have to get reducers for or something.
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post #6 of 9 (permalink) Old 02-08-2011, 08:42 PM
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I've had the same tank sitting on the stand now for two months. I considered doing the same thing. I'm curious to see what you do!

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post #7 of 9 (permalink) Old 02-08-2011, 11:54 PM Thread Starter
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Let's flip a coin.
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post #8 of 9 (permalink) Old 02-09-2011, 12:21 AM
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Quote:
Originally Posted by sns26 View Post
Let's flip a coin.
LOL! You only break one of these before you pay someone else to do it.

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post #9 of 9 (permalink) Old 02-09-2011, 02:05 AM Thread Starter
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Eh, I'm not worried about breaking it. Then I'm out $150, which is what I paid for this thing used. Bad but not a disaster in the grand scheme of things.

I'm more worried about it working and the result looking ugly. Then I'm stuck with it?
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