[問題] 缸底發熱線代替暖管?

robinyip · **註冊時間:** 2007-02-18 22:39 **文章:** 179

請問缸底發熱線可唔可以代替暖管呢?

請問有沒有型號推介?

Many thanks

Macbrush · **發表於 :** 2007-03-14 17:35

得就得，不過要加多個溫控，都唔平。

Andy Kong · **發表於 :** 2007-03-14 18:32

I doubt.

I am checking out this possibility for my new layout, for 84"x18" aquarium footprint, I need something as long as 10m long, but still it only rated at 100W only, so it is impossible to serve as the main heating device for an aquarium of this size.

I think the 缸底發熱線 in planted aquarium is mainly aimed to created a small temperature different which will induce water flow only.

robinyip · **註冊時間:** 2007-02-18 22:39 **文章:** 179

我個缸係 24" x 12" x 18"又可唔可以用缸底發熱線代替呢? Thanks

Macbrush · **發表於 :** 2007-03-14 19:30

Actually, you would be surprised that how efficient heating cables can heat up the tank. During the coldest days, if I turn on the heating cables, my heating tubes would never turn on, not to mention chiller occasionally kicks in.

Raymond-MA · **發表於 :** 2007-03-14 20:38

我都用緊床底發熱線，但用來製造對流，床底與暖管相差一度(下高上低)，等對流帶動底床power sand物料如上升。

robinyip · **註冊時間:** 2007-02-18 22:39 **文章:** 179

都幾好喎, 咁有冇邊隻牌子介紹呢? 最好有埋溫度控制, 同埋我個缸應該用幾多watt呢?

另外想問問魚街邊度有得賣, 因為整親隻腳唔想逐間問, many thanks

Andy Kong · **發表於 :** 2007-03-15 00:30

For 24x18 footprint, I think 3m long 床底發熱線 can cover it up quite well, you can have 5 or even 6 rounds of 發熱線 zic-zag on the bottom of aquarium already. From what I saw, 床底發熱線 at this legth will rated at 25W only. As I say before, I doubted if 25w heating element can support your 120L, but Macbrush's opinion is trustworthy in my experience, so you can give it a try.

Andy Kong · **發表於 :** 2007-03-15 00:32

Macbrush 寫:

Actually, you would be surprised that how efficient heating cables can heat up the tank. During the coldest days, if I turn on the heating cables, my heating tubes would never turn on, not to mention chiller occasionally kicks in.

Interesting, mind to share more detail? footprint of aquarium (72" x 24" ?), length of heating element. rating and power supply details etc. I saw brands like Hydro offers 24W DC type heating elements but they are a lot more expensive then the AC powered products (without temperature control).

robinyip · **註冊時間:** 2007-02-18 22:39 **文章:** 179

thanks for your valuable information, I'll shop around and give a try

鏍絲 · **發表於 :** 2007-03-15 01:35

其實你點解會諗到用發熱線代替暖管？個缸打算點樣架設？有冇諗住用水冷？
以我理解，暖管係要黎同D魚保溫/恆溫，唔使D水溫大上大落，影響魚既健康；發熱線係要黎慶熱個泥/砂底，利用熱向上升，做成一個對流，咁缸底冇咁多死水，咁就冇咁多消化菌去食D根，而對流亦可令養份均勻一D，根就可以生得健康D。
再講遠D，如果你唔用水冷，夏天你較幾多度？較得高，會煲湯；較得低，唔會著。冬天你較幾多度？較得高，會煲根；較得低，泥底夠熱已經熄，泥面溫度一定未到。
如果你有水冷，你又較幾多度？用得水冷都唔會用暖管。
所以我認為發熱線唔可以代替暖管，不過暖管就可以代替發熱線

。

robinyip · **註冊時間:** 2007-02-18 22:39 **文章:** 179

已經用緊水冷較左24度, 假設用發熱線時泥底溫度高過水溫四度, 咁發熱線就較28度, 理論上水溫就24度, 啱啱唔會開水冷, 就算開左都冇問題, 而溫差又可做到對流效果

唔知咁諗法有冇問題, 請大家比下意見丫, thanks

鏍絲 · **發表於 :** 2007-03-15 03:00

咁就係純發熱線做對流，而唔係代替暖管。
一般都唔會較咁大溫差，唔係好大機會水冷同發熱線都長著，因為出水口會近泥面，抽走既係熱水，再計埋緩衝，分別29度同23度先熄，有排先到。

robinyip · **註冊時間:** 2007-02-18 22:39 **文章:** 179

如果以我個例子, 水溫可以去到24度, 咁咪做到暖管功效囉, 理論上係咁, 唔知實際會係點

robinyip · **註冊時間:** 2007-02-18 22:39 **文章:** 179

小小update, 用緊75w發熱線較26度(溫控在發熱線上吋半泥底), 水冷較24度(26度著機),今日咁凍都可以keep到25度, 水冷冇著過, 發熱線就大約兩小時會著20分鐘,效果唔錯

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[問題] 缸底發熱線代替暖管?

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