450 Gallon Peninsula Display

Updated photos...

2010-03-31_22-00-33.jpg


2010-03-31_22-01-01.jpg


2010-03-31_22-01-24.jpg
 
jbarnaby said:
First off...The tank looks wonderful!!! but I was wondering what is that white stuff in the corners? Is it Salt Creep? Is it inside the tank or out?
Click to expand...
No it is not salt creep, it's just coralline algae. I do not have much luck scraping it off the corners on my acrylic tank.

Thanks for the compliment.
 
mcrist said:
No it is not salt creep, it's just coralline algae. I do not have much luck scraping it off the corners on my acrylic tank.

Thanks for the compliment.
Click to expand...

I have same problem. Very difficult to get the coraline out of those inside corners. I originally wanted my corners bent from a single piece of acrylic, but the builder talked me out of it...now I have purple corners.
 
Untamed12 said:
I have same problem. Very difficult to get the coraline out of those inside corners. I originally wanted my corners bent from a single piece of acrylic, but the builder talked me out of it...now I have purple corners.
Click to expand...
This past weekend I noticed a way to remove the coralline algae from my corners but so far I haven't thought of a way to recreate it. When I was refilling the tank I had my two return nozzles pointing to my bottom corners of my tank (both of my return nozzles have educators/penducators attached to them). The high pressure stream of water easily removed the coralline algae in huge strips. I wonder if there are any submersible pumps that are also pressure rated? If I could find a pump like that then I should be able to attach an educators/penducators to it. I should then be able to clear away all the coralline in my corners, well in theory anyway.
 
Untamed12 said:
I have same problem. Very difficult to get the coraline out of those inside corners. I originally wanted my corners bent from a single piece of acrylic, but the builder talked me out of it...now I have purple corners.
Click to expand...

I have a tank made of one rounded piece of acrylic... you made a wise decision.
 
TheSurgeon said:
I have a tank made of one rounded piece of acrylic... you made a wise decision.
Click to expand...

Well... a cylinder is a very different beast to be sure. I'm talking about having a bent corner as opposed to a seamed corner.

It is exactly like why they don't build commercial kitchens with right angle seams in the stainless steel. Every corner has a nice smooth curve to allow for sanitary cleaning.

My builder talked me out of it because the bent corner would produce a distorted view and since the tank is 1" thick, you can't bend it very sharply. I think this would be the best way to build a 5 or 6 sided, large acrylic tank since the bend angles would be less.

Hmm...water pressure removal. Interesting idea. I find that my fingernail is effective. Unfortunately, I run out of fingernail before I run out of coraline!
 
It's really interesting to see the evolution of the system, thanks for sticking with it. Did I miss the part were you pulled the closed loop system, are you relying just on the two penductors for circulation. I have two penductors on my tank and they really do a great job, plus they don't have the expense or maintenance issues of pumps. I think your nitrates will balance out and reduce now you've got that sand out, but it might take a while for the LR to take over. Good job.
 
Wow mcrist. I'm extremely impressed with your approach to the hobby and results with your tank. I have to say; online you come across as a very good guy and that can be tougher than building/maintaining a BIG tank :)

Regarding the nitrates: You may try taking a water sample for your test from the surface of your rock (use a turkey baster). I would test it for P04 as well. Often times our LR can become a nutrient-laden home for generating nitrates while slowly releasing P04 (this is what the slime algae feeds on). Once saturated LR is a very unforgiving source of nutrients..

Btw: I ran two penductors off an Iwaki70 for a few years on my 280gal and those things blew everything not glued down, across the tank :) It created a complete cyclone/circular effect. I share this because I thought early in the thread you cited using an Iwaki100. This being the case I think you could likely add an additional one or two penductors and greatly increase the output. Having thought about it another minute, the Iwaki is the return from your basement, so its probably eating up that extra head.. So nm! ;) Why waste a perfectly good self answering question, right?

God bless,
 
MGB said:
It's really interesting to see the evolution of the system, thanks for sticking with it. Did I miss the part were you pulled the closed loop system, are you relying just on the two penductors for circulation. I have two penductors on my tank and they really do a great job, plus they don't have the expense or maintenance issues of pumps. I think your nitrates will balance out and reduce now you've got that sand out, but it might take a while for the LR to take over. Good job.
Click to expand...
I guess you did miss it when I removed the closed loop. :) I removed it on March 25-26th when I reaquascaped my system and removed a few fish. I do have two educators/penductors but they are currently attached to an Iwaki 55RLT and not the 100RLT. I downgraded the pump a few months ago to save on electricity. I also like that my battery backup can now run the return pump for several hours without power.

I sure hope my nitrates issues will go away one day but so far the lowest I have achieved is 13.2 NO3.

Thanks
 
jlehigh said:
Wow mcrist. I'm extremely impressed with your approach to the hobby and results with your tank. I have to say; online you come across as a very good guy and that can be tougher than building/maintaining a BIG tank :)

Regarding the nitrates: You may try taking a water sample for your test from the surface of your rock (use a turkey baster). I would test it for P04 as well. Often times our LR can become a nutrient-laden home for generating nitrates while slowly releasing P04 (this is what the slime algae feeds on). Once saturated LR is a very unforgiving source of nutrients..

Btw: I ran two penductors off an Iwaki70 for a few years on my 280gal and those things blew everything not glued down, across the tank :) It created a complete cyclone/circular effect. I share this because I thought early in the thread you cited using an Iwaki100. This being the case I think you could likely add an additional one or two penductors and greatly increase the output. Having thought about it another minute, the Iwaki is the return from your basement, so its probably eating up that extra head.. So nm! ;) Why waste a perfectly good self answering question, right?

God bless,
Click to expand...
I don't think I have ever received as nice of a compliment on-line before, thank you.

I have read posts about taking water samples near the rock to see if the live rock is leaching nitrates and phosphates but I have always questioned it effectiveness. I guess I doubt you could get an accurate reading since anything measurable would quickly dissipate
 
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