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new marine tank questions

This is a discussion on new marine tank questions within the Saltwater Aquarium Equipment forums, part of the Beginner Saltwater Aquariums category; --> to all with any imput, i am in the process of buying an 8x2x2ft aquarium with a 4x1.5x1.5ft sump it has taken me 7yrs ...

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new marine tank questions
Old 03-16-2009, 06:11 PM   #1
 
new marine tank questions

to all with any imput, i am in the process of buying an 8x2x2ft aquarium with a 4x1.5x1.5ft sump it has taken me 7yrs to get the time to go back into marines,due to moving house and having kids.now i find that much has changed but im still very keen.my question is can anybody recommened which internal powerheads i will need to create a good enough flow,should i stick with a skimmer only or also introduce a deep sand bed.i plan to create a reef system i did have an issue with lighting but after driving myself mad with which one s are best ive settled with 2no 80w twin and 2no 40w twin dd razor lights for now.any help on any part of my new setup will be welcome regards jason frank.
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Old 03-16-2009, 06:16 PM   #2
 
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I personally am a huge believer in deep sand bed systems. A sand bed of 4'' to 6'' is what you are looking for. Anything less becomes a nutrient trap, unless you go with less than 1/2''. I am personally in the process of setting up a 180 reef and intend to have a DSB. For the record, you do not want a plenum underneath the sand.

As to the skimmer, yes, you only want a skimmer, a DSB, and live rock. Get the best skimmer you can afford, because it is the life of your system. I chose an ASM G3 skimmer.
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Old 03-16-2009, 06:16 PM   #3
 
I would do 1 - 1 1/2 in sand bed.
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Old 03-16-2009, 11:15 PM   #4
 
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1 or 1.5 inches of sand will trap debris causing issues.

as for power heads, have you considered a closed loop?
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Old 03-17-2009, 12:17 AM   #5
 
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Quote:
Originally Posted by jason frank View Post
to all with any imput, i am in the process of buying an 8x2x2ft aquarium with a 4x1.5x1.5ft sump it has taken me 7yrs to get the time to go back into marines,due to moving house and having kids.now i find that much has changed but im still very keen.my question is can anybody recommened which internal powerheads i will need to create a good enough flow,should i stick with a skimmer only or also introduce a deep sand bed.i plan to create a reef system i did have an issue with lighting but after driving myself mad with which one s are best ive settled with 2no 80w twin and 2no 40w twin dd razor lights for now.any help on any part of my new setup will be welcome regards jason frank.
Jason, great to see you asking before the plunge, a couple of thoughts for you, this is a big tank and will require some big equipments lol, I suggest you try and plan a stocking list this will help you with power heads or closed loops (my favorite for flexibility, look at locline and fittings)
If you plan a DSB I would also suggest a "rocklift system" to avoid dead spots and excessive detritus build up, keep asking questions!
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Old 03-17-2009, 05:50 AM   #6
 
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Originally Posted by onefish2fish View Post
1 or 1.5 inches of sand will trap debris causing issues.

as for power heads, have you considered a closed loop?
Can you explain the how?
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Old 03-17-2009, 06:35 AM   #7
 
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Originally Posted by mikedelo View Post
I would do 1 - 1 1/2 in sand bed.
This is exactly what you want to avoid. The evolution of the DSB and plenum systems over the last 10 to 12 years has led to a rather predictable method of achieving success. Hobbyists attempting to use less than 3'' of sand, 4'' playing it safe, have experienced long term difficulty with the sand bed.

On the flip side, if you decide a DSB is just to expensive, then you want a very thin sand bed and adequate sand sifters.
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Old 03-18-2009, 03:55 AM   #8
 
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Originally Posted by Pasfur View Post
I personally am a huge believer in deep sand bed systems. A sand bed of 4'' to 6'' is what you are looking for. Anything less becomes a nutrient trap, unless you go with less than 1/2''. I am personally in the process of setting up a 180 reef and intend to have a DSB. For the record, you do not want a plenum underneath the sand.

As to the skimmer, yes, you only want a skimmer, a DSB, and live rock. Get the best skimmer you can afford, because it is the life of your system. I chose an ASM G3 skimmer.
would the skimmer and dsb not just be competing against each other if the sand bed feeds on the proteins your getting rid off?would a dsb in the sump or seperate all together be a good idea,as i plan to turn my aquarium into a washing machine with 4no good powerheads and 2no 5000 gallon return pumps so i wouldnt want the sand flying all over.
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Old 03-18-2009, 04:18 AM   #9
 
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Originally Posted by onefish2fish View Post
1 or 1.5 inches of sand will trap debris causing issues.

as for power heads, have you considered a closed loop?
im going with 4no powerheads and a controle box to alternate them i will also have 2no 5000ltr return pumps all of which i can turn the flow write down.i plan to run everything at half speed for several hours and then crank it all up for about half an hour on a daily basis.the problem with this is will the sand not end up everywere other than the aquarium base,therefore should i have a coral gravel base for cosmetic purpose and a DSB in the sump or completly seperate all together
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Old 03-18-2009, 04:30 AM   #10
 
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Originally Posted by BlueHalo View Post
Jason, great to see you asking before the plunge, a couple of thoughts for you, this is a big tank and will require some big equipments lol, I suggest you try and plan a stocking list this will help you with power heads or closed loops (my favorite for flexibility, look at locline and fittings)
If you plan a DSB I would also suggest a "rocklift system" to avoid dead spots and excessive detritus build up, keep asking questions!
if i were to go with the DSB do i still need a skimmer or would they just be competing with each other,what about coral grave gravel in the main tank and a seperate DSB, then when i crank up the powerheads and return pumps the main display will get a good shake up, then i can slow everthing down again i could do this on a daily basis electronically or nanually.
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