90 gallon aquarium with 20 gallon sump ideas - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 01-29-2020, 02:27 AM Thread Starter
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90 gallon aquarium with 20 gallon sump ideas

Hey y’all. My friend is giving me a 90 gallon with a 20 gallon sump. The 90 gallon is 48” long, 18” deep, and the height is 24”. Ive done 55 gallons with discus before and it didn’t turn out well. I want to do this right but afraid the 24” depth is going to make getting adequate lighting impossibly expensive if i want any foreground plants to survive. Any thoughts?
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post #2 of 8 (permalink) Old 01-29-2020, 02:40 AM
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Can you run them each as separate tanks?

Style: Organic potting soil, sand, gravel, wood, plants, moss, algae, biofilm, snails, shrimp, small fish, dual siestas
Tech : Small tanks, Fluval Plant 3.0 Nano, Top Fin MF10, Eheim Skim 350, Tunze 3161, Neptune Apex EL
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post #3 of 8 (permalink) Old 01-29-2020, 02:44 AM Thread Starter
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Originally Posted by Streetwise View Post
Can you run them each as separate tanks?
The 90 is already drilled and setup for that. It’s actually a saltwater tank my friend used as a temporary tank when he would move his 120 gallon Red Sea. I just don’t have the money for a new tank nor a high tech tank where I’m going to purchase the best of the best like GLA. I do have plans to make a high tech like that someday though
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post #4 of 8 (permalink) Old 01-29-2020, 02:47 AM
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Are you going to be running co2? If not, you don't need high light anyway. If you are then you are probably looking to get fluval 3.0 or something similar. Expect to spend around 200 dollars for a light.


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post #5 of 8 (permalink) Old 01-29-2020, 02:51 AM Thread Starter
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Are you going to be running co2? If not, you don't need high light anyway. If you are then you are probably looking to get fluval 3.0 or something similar. Expect to spend around 200 dollars for a light.
Is there any cheaper DIY Co2 options? GLA will cost around $500 for a setup for a 90 gallon. I just know when i was looking at getting a big planted you want something more shallow then a 24” high 90g. 24” is a lot of water to try and get the light to pierce. I always got the current light bars in the past and they were never able to keep the plants healthy
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post #6 of 8 (permalink) Old 01-29-2020, 12:06 PM
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Is there any cheaper DIY Co2 options? GLA will cost around $500 for a setup for a 90 gallon. I just know when i was looking at getting a big planted you want something more shallow then a 24Ē high 90g. 24Ē is a lot of water to try and get the light to pierce. I always got the current light bars in the past and they were never able to keep the plants healthy
So yes there are cheaper options then GLA. The off the shelf cheap option is CO2Art. Or you can buy a used regulator from e bay for around 30 dollars and then buy post body parts screw on. This will cost you around 100 dollars. So for under 150 you will have a good regulator. After that you will need to buy the actual pressurized cylinder (50-100 typically) and get it filled (typically around 20-30 dollars) and if going the cheaper diy route build a reactor (around 20 dollars) so for somewhere between 250 and 310 you could have a complete setup.

I would be remiss if I did not mention diy co2 (where you mix yeast and sugar together to form co2). That is significantly cheaper but also pretty unreliable. I actually don't know anyone who has done it for say a year or more. Everyone just gets fed up with it at some point and either dumps it or moves to pressurized.

Anyway If you don't want to do pressurized co2 you should not even have high light or even medium high light. Your plants will run out of whatever co2 is available in the water and start growing algae. Instead you are looking at getting about 20-30ppfd at substrate ideally. This means you want low to medium light. This is definitely not hard to come by even in a 24" high tank which is a depth that is pretty typical in anyone running say a 120 gallon tank of which there are quite a few people running just such tanks in the journal section of this forum.


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post #7 of 8 (permalink) Old 01-29-2020, 01:45 PM
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If you don't have $500-$1000 lying around, why not just setup a really nice low tech tank and scheme and dream of high tech down the road. My 60g low tech grows plants just fine. Oh, there's no real carpet plants but the fish don't mind. I'm using a 48" Finnex Planted Plus 24/7 in 24/7 mode.
------
I did DIY CO2 (Sugar/yeast) for a year or more and plants did grow faster, but I tired of the hassle for a little faster growth. Ask yourself if you want a fish tank or a water garden. (I'm more about the fish and the plants are naturalization and for water purity - and to that end, fast growing floating plants are the very best!) Oh, and fast growing floating plants will do well under almost any light.
:-)

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60g Marineland Community, Finnex Planted+ 24/7, Silica (pool filter) sand.
10g, 29g, & 37g fry grow out tanks, 110g stock tank.


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post #8 of 8 (permalink) Old 01-29-2020, 04:43 PM
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Years ago, I had a heavily planted 90 gallon that was illuminated by 2 shop lights with a total of 4 T12 fluorescent tubes from Home Depot. Total cost--about $35. There wasn't anything I couldn't grow, and I tried over 40 different plant species. You'll be fine.
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