平價LED燈具與植物生長 - 魚
By Vanessa
at 2013-05-15T01:53
at 2013-05-15T01:53
Table of Contents
Photosynthetic Photon Flux Density
[待測物] (單位:μmol/m2・s → PPFD)
UP雅柏 超薄型雙掛式LED夾燈 577-1118
UP雅柏 PRO Z 水草專用LED燈 847-1200
ISTA伊士達 二代超薄LED跨燈(全白) 1250-1700(全開) 1300-1600(關一排)
910(關兩排) 900-1300(三排各減一段)
[參考值]
一般T5燈管 200
陰天 700
夏天的正午 2000
*燈具皆為對應1.5呎缸
*光度計sensor與待測物的距離:接近0
簡評:
基本上這三款燈具對植物生長而言是足夠的,最低也有超過500 PPFD
ISTA甚至有點太強,幾乎快接近陽光了,難怪我的辣椒榕差點種到陣亡wwww
然而LED的光角非常小,所以打出去的光線幾乎會集中在正下方
所以要讓整缸的水草都能確實接收到光線的話,燈具就得盡量架滿魚缸
另外,燈具與燈具間須保留適當的距離,不然光線交會處的光會太強
BTW,個人覺得ISTA的白光會比UP的還要柔和一點,但仍舊有點刺眼
感謝phenil板友協助本次的燈具測試及解說<(_ _)>
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