水草情迷

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咁又應該唔駛, 好似ATMAN o既燈箱係可以調校插座的闊度, 差少少問題不大, 但係記住配合適當的火數。

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Sang san or other experts, Is it possible to use PL 11W PML Blue and white tube to get the same effect as you said "矮珍珠變得矮"?

But some web information said Aquarium plants respond most positively to light with reduced blue and increased red colouration in the lighting spectrum.

As I know there are three factors should be considered for lighting, i.e. CRI (Color Rendering Index), Kelvin and Lumens. Are there any full spectrum PL tube available in the market? and how can I know the CRI for each tube? Because I encounter the Cool-white light I used may be not suitable for aqautic system (Too low CRI reading).

Actually, high CRI isn't too useful for the plants, very high CRI(>90) benefits your eyes more than the plants (because it makes plants & fishes look more natural). Higher CRI means less lumens. A PL tube with CRI ~80 is fairly enough. Sometimes just the model no. can tell the spec. of the PL tubes.
e.g. Philips 865 PL :8=CRI>80 65=6500K color temp. 840 8=CRI>80 40=4000K vice versa.
However, it just applies to well-known brand.

BTW, if you want to add a blue tube but don't want to sacrifice your current PL tubes, you can add a T4 or T5 8W FL tube. 8w T5 FL tube is 9.5" long while 8W T4 is 13.5", both are just 1" wide (including the electronic ballast). But there is no power switch on the fixture, you need to do some wiring and beware the safety when placing over the aquarium.
Here are some references for you:

http://www.aquabonneville.org/ligforthefreaqu.html
http://www.landlite.com/catlist.asp?cla ... Nclassid=5
http://www.lighting.philips.com.cn/pro_ ... eiyiti.htm

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............."近"...........配服......

我個細缸己有一支36W PL +11W PL，所以今次買了一支11W PML 藍白管試下效果，將來睇下有冇好o既FL燈座再一拼換曬佢o地。

好我亦找到D簡體資料:
http://www.cnfish.com/szzl/zw.asp?aid=732

not neccessary to have the ada管座 la
I'm using four ADA FL lights with my nisso 管座

其實除了顏色外, 草缸內的亮度對植物長高速度也是非常重要的, 因為一般藍管及紫管的亮度遠較三波長白管為暗, 若換了顏色, 卻犧牲亮度, 植物倒頭來因追光高得更快.

我曾試過用東芝及nec的biolux紫管連同pl及fl白管同用, 但因亮度減低令水草長得高而幼, 所以已用回白管了, 所以除非你確認缸內已有足夠亮度, 否則用回三波長白光好了.