[問題] Filter for Community tank of 15(L)x10(W)x(15(H)?

Ah_Chiu · **註冊時間:** 2006-09-18 13:01 **文章:** 86

Hi all,

Want to set up a community tank of 15"(L)x10"(W)x15"(H) for grass and about 50 fishes (or ever more)!!

I know it is a bit greedy to keep >50 fishes. Really cracy for a "big family" but don't have further space for a larger tank!!

I learned fm old topics that the requirement is about 5 cycles for "non" over-crowded tank. But if I need to over-feed the tank, what capacity of the filter should I use ?

Is Tetra Ex-90 sufficient or should it be Eheim 2028??

Pls help me!!

Andy Kong · **發表於 :** 2006-09-19 02:05

If you stick with the really small tetra, such as 螞蟻燈，小丑燈，一線小丑燈, 胡椒燈, 綠燈 etc, then 50 fishes in a tank like this is "possible", though not recommended.

and you are not "a bit" greedy, you are VERY GREEDY already, so better set a smaller target, say 20 tetras.

If you can handle the water current correctly, a bigger filter will help, so either EX90 or Eheim 2028 will work alright, but that is just part of the deal, the main point is:
慢加魚，多觀察，肯定魚群健康才再加小量魚，縱是定下目標，也需留心魚群情況，切忌一意孤行。

老柯 · **發表於 :** 2006-09-19 03:02

30L water to keep >50 fishes? I believe there will be 2 issues,

1st, after you planted grasses, you'll all fishes assemby in center part of the tank all the time. Easy to makes fishes stress, and no fun to watch it either.

2nd, if you use a real strong filter to handle the over rise tank; May be OK to handle the bio filter system, but the strong water current will harmful for your fishes.

Agreed with Andy, you are

引言回覆:

not "a bit" greedy, you are VERY GREEDY

. I'll say for yr tank max. be 40, also depands how & what grass plant there.

Andy Kong · **發表於 :** 2006-09-19 03:27

老柯寫:

30L water to keep >50 fishes? I believe there will be 2 issues,

1st, after you planted grasses, you'll all fishes assemby in center part of the tank all the time. Easy to makes fishes stress, and no fun to watch it either.

2nd, if you use a real strong filter to handle the over rise tank; May be OK to handle the bio filter system, but the strong water current will harmful for your fishes.

Agreed with Andy, you are

引言回覆:

not "a bit" greedy, you are VERY GREEDY

. I'll say for yr tank max. be 40, also depands how & what grass plant there.

40 is the max., and that is for someone who know exactly what he is doing, and has the knowledge, skill, resource and dedication to do it right. For anyone who is fairly new to this hobby, strongly recommended NOT to use 40 fishes as the target.

老柯 · **發表於 :** 2006-09-19 03:32

Andy Kong 寫:

老柯寫:

30L water to keep >50 fishes? I believe there will be 2 issues,

1st, after you planted grasses, you'll all fishes assemby in center part of the tank all the time. Easy to makes fishes stress, and no fun to watch it either.

2nd, if you use a real strong filter to handle the over rise tank; May be OK to handle the bio filter system, but the strong water current will harmful for your fishes.

Agreed with Andy, you are

引言回覆:

not "a bit" greedy, you are VERY GREEDY

. I'll say for yr tank max. be 40, also depands how & what grass plant there.

40 is the max., and that is for someone who know exactly what he is doing, and has the knowledge, skill, resource and dedication to do it right. For anyone who is fairly new to this hobby, strongly recommended NOT to use 40 fishes as the target.

Sorri, I missed 1 very important statement

Fishes should be added progressively in between months time!

Ah_Chiu · **註冊時間:** 2006-09-18 13:01 **文章:** 86

Thank you very much for the expert advice. I will only add the fishes slowly!

But just wanna further clarify (sorry, don't know how to type Chinese!):-
"If you can handle the water current correctly, a bigger filter will help, so either EX90 or Eheim 2028 will work alright" (per bro. "Andy Kong")

(1) How much should I "over-power" the external filter? Is it simply on "the more powerful the better" criterion?

(2) Equivalently, which filter would you guys recommend me to use on a cost-effectiveness basis? Ex-90, Eheim 2026 or 2028 (unlucky that Ex-120 is too big to fit into my scarce space!!)??

(3) How to ease the "typhoon" current under "over-powered" situation to a bearable level??

Thank you thank you very much again

Andy Kong · **發表於 :** 2006-09-19 13:34

Ah_Chiu 寫:

Thank you very much for the expert advice. I will only add the fishes slowly!

But just wanna further clarify (sorry, don't know how to type Chinese!):-
"If you can handle the water current correctly, a bigger filter will help, so either EX90 or Eheim 2028 will work alright" (per bro. "Andy Kong")

(1) Which filter would you guys recommend me to use on cost-effectiveness basis? Ex-90, Eheim 2026 or 2028 (unlucky that Ex-120 is too big to fit into my scarce space!!)??

(2) How to ease the "typhoon" current to a bearable level??

Thank you thank you very much again

To reduce the current effect, you can use
(1) multiple water outlet
(2) if you use waterfall pipe, enlarge the hole of the pipe
(3) position the pipe or water outlet correctly, for example, if you face the water outlet to the side of aquarium first, and let the water "reflect" into the main aquarium area, the water current effect will be further reduced.

Check out this example:
http://www.aqugrass.com/phpBB2/viewtopi ... 0&start=15

I'll pick between EX90 or Eheim 2026, and leave the final choice to you.

老柯 · **發表於 :** 2006-09-20 05:20

I don't feel comfortable to apply a 1000L/hr filter on a 15"x10" area & 30L tank. No matter you do for the water current and there will still too strong. And I believe there are not much you can do for it also. Of course you can turn the output lower but ...... not meaningful to use that size of filter.

I used to have a very smiliar size community tank (16x10x12). I used Eden 501 for about half year, & I was happy for the water current. But the room is limited & need to clean it up every 2 weeks time. At that time I was keeping around 40 fishes (that was real crowded)!

I will say your consideration may put on the filter material capacity instead.

Andy Kong · **發表於 :** 2006-09-20 11:21

老柯寫:

I don't feel comfortable to apply a 1000L/hr filter on a 15"x10" area & 30L tank. No matter you do for the water current and there will still too strong. And I believe there are not much you can do for it also. Of course you can turn the output lower but ...... not meaningful to use that size of filter.

I used to have a very smiliar size community tank (16x10x12). I used Eden 501 for about half year, & I was happy for the water current. But the room is limited & need to clean it up every 2 weeks time. At that time I was keeping around 40 fishes (that was real crowded)!

I will say your consideration may put on the filter material capacity instead.

EX120 and E2028 are 1000L/hr filter, the EX90 and E2026 are smaller. For aquarium at around 16" -18" community tank, normally my choice will be EX60/75 or P10 or E2213, So this is one step "above" the normal recommended filter.

Ah_Chiu · **註冊時間:** 2006-09-18 13:01 **文章:** 86

Thks for the advices!

I finally bought Ex-90 instead of Eheim 2026 (since still think Eheim is too expensive for a newbie! Maybe later when I experience advances!).

I am quite happy with the over-done water current, in view of my very greedy aim to "over-crowd" the tank

, but don't know how would the tenants feel

!!

BTW, the power cable of my Ex-90 is too short. Need to extend it and also want to add a switch.

Pls kindly advice as to -
(1) what type of wire should I buy ? Any particular "specifications"?
(2) what type of switch should I buy ? Any particular "specifications"?

Thank you thank you again

Andy Kong · **發表於 :** 2006-09-22 00:58

Ah_Chiu 寫:

Thks for the advices!

I finally bought Ex-90 instead of Eheim 2026 (since still think Eheim is too expensive for a newbie! Maybe later when I experience advances!).

I am quite happy with the over-done water current, in view of my very greedy aim to "over-crowd" the tank

, but don't know how would the tenants feel

!!

BTW, the power cable of my Ex-90 is too short. Need to extend it and also want to add a switch.

Pls kindly advice as to -
(1) what type of wire should I buy ? Any particular "specifications"?
(2) what type of switch should I buy ? Any particular "specifications"?

Thank you thank you again

Any tri-wire cable at 10A or above will do, filter need less then 5A for sure, so power cable is not a problem. Since you are not familiar with electricity work, maybe you can add a 13A plug with Switch build in, instead of adding a switch in the middle.

老柯 · **發表於 :** 2006-09-22 01:24

去電器舖買件有制

Ah_Chiu · **註冊時間:** 2006-09-18 13:01 **文章:** 86

Yesi, yesi

BTW, now using a 2nd hand light (fm my friend) fitted with a light tube marked "德DG根高效殺菌" (10Watt, 28.5cm long with normal diameter of approx. 2cm).

Now wanna change the old light tube. Checked to the old topics which talked about types like "T5, T8, T12, PL.....". I am very confused since I only used to "UV" light tube.

Pls advice -
(1) which type of tube is better and how much watts are suitable for my 30L community with "陰grass"?

(2) is there still "UV tubes" or those "T5, ...PL" already have UV function?

老柯 · **發表於 :** 2006-09-22 14:15

No, that's not UV tubes; It's only a "purple" color tube. Yr light is for T8 tube ONLY and the length only can fit for 10W. So, the only thing you can change is the tube color (white color).

UV tubes is NOT for lighting.

Suggest you take a look on those 置頂 & 精華

Ah_Chiu · **註冊時間:** 2006-09-18 13:01 **文章:** 86

Thanks bros for all the info!

One further qn:-

I tried to buy a white color tube in FS but could not find one (and finally I bought a pink color as an temp substitute!)! Where can I buy a white color one?

Pls advise!

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[問題] Filter for Community tank of 15(L)x10(W)x(15(H)?

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