Question, upgrade lighting (sps tank)

[NAx0]

At present my aquarium of 300 liters (75g.) is composed by:

2x150w MH

bulbs- lifetech 14.000kº

and actinic 36w

And I have determined to change the iluminacion for my SPS and to put:

1x400w MH

bulb BLV 20.000kº

and day light 10.000kº 36w

What do you think?

The change will be positive? The lightbulb that seems you?

Thks!

[FuEl]

Actually maybe you can consider 2X250W? It will help to spread the lighting more evenly across the tank. I feel that if your tank is not very deep (2ft or below) there is not much difference between a 400W bulb and a 200W bulb in providing sufficient light intensity. There is only a certain maximal amount of light that will be used by corals for photosynthesis (everything has a limit). Any excess light will simply be wasted (as in not used by the corals). If you are going to stick to a single 400W bulb you will have to get the correct elevation to have a nice spread of light across the entire tank surface. Just a point to ponder over.

[typrobin]

how big is your tank??

300 ltr seems to be 4ft or above....

i doubt that a single 400W will provide good enough spread....

2X250 would be better...

[NAx0]

I have been looking at...

and it rejected the possibility to mount the 400w

They are presented me two possibilities:

2x150w (14kº) and 1x150w (20kº)--center

1x150w (14kº) and 1x250w (14kº)

Which you think that it will go better? for my sps

PD: I present myself to change the lighting reason my sps finish all green and blue

[lightningstrike]

how abt 2x 250W 10kk and 1x 150W radium/20kk? make sure u slowly introduce the lights to ur sps too.

juz me 2 cents.

[DeepBlue]

I rather go with the 400W MH (with spider reflector) with a few T5 tubes enhancing the coverage ....best of both world

[planetg]

if u wan wider or more evenly spread light and dun mind the slight yellowish tint, go with 2x250W 10K and use a pair of T5s to do supplement.

if u wan bluish looking, take 14k but less intense.

using 1 or 2 MH really depends on the width of you tank.

if got chiller budget and a hardcore SPS collecotr, etc... go for 2x400W. u can never give them enuff light in an aquarium!!

[scarab]

Not sure how expensive electricity is in Spain but if it's affordable go for

2x400W (10KK) + 1x 250W(marine blue/radium)

and supplement with 4 T5 blue (2 in front and 2 behind).

The 10KK will be very yellow but the marine blue and blue T5 will balance it nicely.

Electricity is at a premium in Singapore so I'm using

2x250W (10kk) +1x150W(marine blue) and 4 T5 blue for my 3.5 ft tank.

[NAx0]

all thks, im studing your propostes

[Dispar_Anthias]

I rather go with the 400W MH (with spider reflector) with a few T5 tubes enhancing the coverage ....best of both world

haha you kana 400watt bug liao ah!!! Hmm IMO 3X400watt 2radium and 1 iwasaki 6500k