It depends on the fish you plan to keep but IMO 20g should be enough for your 75. You could cover the top of the sump with either glass or acrylic sheets to minimize gas exchange.
Sump questions
I am trying to figure out a sump for my 75 gallon.
A guy near me is selling a sump the size of a 20 long. Would that work for a 75?
How big of a sump pump should I get?
Also, do you have any tips to minimize co2 loss with a sump? Thanks!
A guy near me is selling a sump the size of a 20 long. Would that work for a 75?
How big of a sump pump should I get?
Also, do you have any tips to minimize co2 loss with a sump? Thanks!
1 - 7 of 7 Posts
+1It depends on the fish you plan to keep but IMO 20g should be enough for your 75. You could cover the top of the sump with either glass or acrylic sheets to minimize gas exchange.
I have a 20L I am going to use for my 60. As for the return pump, you want about a 10x turnover so 750gph, after your headloss from height of tank from sump and size of pipes, turns in pipes, anti-backflows, valves, reactors...... There is a link around here somewhere that will help you figure out what pump will give you the gph you need.
Oh thank you! I will have to look that up!
If you start with the idea of 10x the tank volume per hour, then look up pumps that delivers more than that at the head height (difference in height of the water from top of sump to top of tank) you will be pretty close. Then start looking at the details.
Hybrid drive pumps seem the most efficient use of electricity in terms of watts per gallon of water moved, but they are not so efficient when there is high head height or a lot of flow restriction. It is often suggested to plumb them with the next size up of pipe for long runs or lots of restrictions. They are a great option for ponds and waterfalls where you can plumb with larger pipe, and there are not so many things you are doing with it. Just one filter, and a fairly open one at that, perhaps UV, but not all the flow goes through that.
They are reasonable to look into for larger aquariums, but I am not sure about plumbing all the extras through them. Heater, CO2, UV, ball valves and other fittings each restrict the flow some.
You should research each pump separately, not depend on one chart that seems to have all the info. It doesn't.
Figuring out something like this usually means starting with a general idea, and fine tuning it several times as you get the specs on each piece of equipment you are thinking of.
Hybrid drive pumps seem the most efficient use of electricity in terms of watts per gallon of water moved, but they are not so efficient when there is high head height or a lot of flow restriction. It is often suggested to plumb them with the next size up of pipe for long runs or lots of restrictions. They are a great option for ponds and waterfalls where you can plumb with larger pipe, and there are not so many things you are doing with it. Just one filter, and a fairly open one at that, perhaps UV, but not all the flow goes through that.
They are reasonable to look into for larger aquariums, but I am not sure about plumbing all the extras through them. Heater, CO2, UV, ball valves and other fittings each restrict the flow some.
You should research each pump separately, not depend on one chart that seems to have all the info. It doesn't.
Figuring out something like this usually means starting with a general idea, and fine tuning it several times as you get the specs on each piece of equipment you are thinking of.
Found the calculator I have been playing around with for the return pumps. Doesnt have all of them available on there, but there are quite a few.
http://www.reefcentral.com/calc/hlc2.php
http://www.reefcentral.com/calc/hlc2.php
That is a neat calculator. Interesting to see what changing the fittings does, for example making 90* turns with 2 x 45* fittings. (No change in the scenarios I ran)
It really does improve performance to use sweep fittings if they are available, or use a couple of 45* fittings instead of a 90*. This has been tested in real life, not just in spread sheets.
It really does improve performance to use sweep fittings if they are available, or use a couple of 45* fittings instead of a 90*. This has been tested in real life, not just in spread sheets.
1 - 7 of 7 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
The Planted Tank Forum
A forum community dedicated to Aquatic tank owners and enthusiasts. Come join the discussion about flora, fauna, health, housing, filters, care, classifieds, and more!
Full Forum Listing
Explore Our Forums
Top Contributors this Month
View All
Kwyet
132 Replies
Galabar001
60 Replies
Creature From The Tank
49 Replies
Recommended Communities
