t8 to 250w halides

evildan · 05/20/2006, 04:19 AM

Hi
I wonder if anyone could help me, ive bought a set of 250w halides and have been running them a few weeks now. Ive noticed since ive come from t8 to halides, that the sand at the bottom of the tank has started forming a crust on top and the sand has also started going a brown colour. and needs to be fluffed up everyday. the light stand 1 1/2 ft the top of my tank. I wondered if the lights are to close.
Thanks for the help

reefnetworth · 05/20/2006, 04:32 AM

how old is your set-up? is it fish with LR? what is the temp. in tank? live sand?

evildan · 05/20/2006, 04:44 AM

The setup is 2 years old i have 53kg of fiji live rock, the tanks is 4ft x 2 1/2ft x 2 1/2ft , with a 3ft x 1ft x 1 1/2 ft sump. with 4ft halides 2x250w 14,000k i replaced when i bought the light and 2x46in t5 blue. it is a mix of fish and corals. The temp is 78f. Its wasnt live sand when i bought it 2 years ago.
Thanks for the help.

reefnetworth · 05/20/2006, 05:04 AM

skimmer? do you add nutrients? it sounds like diatoms. which is brown algae. reason for LS ? is it will crust, which is OK. what is calcium ppm? (Ca2) and ALK

a4twenty · 05/20/2006, 05:07 AM

it's common to get an algae bloom when you upgrade your lights.

reefnetworth · 05/20/2006, 05:11 AM

yes. what kind of food do you use?

evildan · 05/20/2006, 05:20 AM

i have a deltec 1250 sump skimmer, i use tmc pro reef salt with tmc reminral as i use ro water in my tank. i use sevenoaks supergreen to feed the corals thats about it. i have a phos reactor with 100ml of rowaphos in it . Ive noticed since ive had theses lights the algae has gone mad i have to clean the glass in my tank every 2 days. calcium is fine my test kit is 20 drops is good which it is at my kh is 10 drops ph is 8.3 i use Hagen test kits at the mo. im awaiting salifert kits. http://www.s-t-m.co.uk/pages/super_green.htm <-- theres the link to the super green.

evildan · 05/20/2006, 05:27 AM

The fish i feed brine, krill ,mysis with garlic and fresh sea weed from tmc range.

05/20/2006, 04:19 AM	#1
evildan Registered Member Join Date: Aug 2005 Location: essex Posts: 8	t8 to 250w halides Hi I wonder if anyone could help me, ive bought a set of 250w halides and have been running them a few weeks now. Ive noticed since ive come from t8 to halides, that the sand at the bottom of the tank has started forming a crust on top and the sand has also started going a brown colour. and needs to be fluffed up everyday. the light stand 1 1/2 ft the top of my tank. I wondered if the lights are to close. Thanks for the help

05/20/2006, 04:32 AM	#2
reefnetworth Premium Member Join Date: Mar 2006 Location: U.S.A. Posts: 3,810	how old is your set-up? is it fish with LR? what is the temp. in tank? live sand? __________________ GIVE A MAN A FISH, YOU FEED HIM FOR A DAY. TEACH A MAN TO FISH, HE FEEDS HIMSELF FOR LIFE. (NEVER, underestimate another man's greed) Current Tank Info: SPS dominated barebottom display with BB sump since 2005, most consistant parameters in 19+ years of reefkeeping.

05/20/2006, 05:04 AM	#4
reefnetworth Premium Member Join Date: Mar 2006 Location: U.S.A. Posts: 3,810	skimmer? do you add nutrients? it sounds like diatoms. which is brown algae. reason for LS ? is it will crust, which is OK. what is calcium ppm? (Ca2) and ALK __________________ GIVE A MAN A FISH, YOU FEED HIM FOR A DAY. TEACH A MAN TO FISH, HE FEEDS HIMSELF FOR LIFE. (NEVER, underestimate another man's greed) Current Tank Info: SPS dominated barebottom display with BB sump since 2005, most consistant parameters in 19+ years of reefkeeping.

05/20/2006, 05:11 AM	#6
reefnetworth Premium Member Join Date: Mar 2006 Location: U.S.A. Posts: 3,810	yes. what kind of food do you use? __________________ GIVE A MAN A FISH, YOU FEED HIM FOR A DAY. TEACH A MAN TO FISH, HE FEEDS HIMSELF FOR LIFE. (NEVER, underestimate another man's greed) Current Tank Info: SPS dominated barebottom display with BB sump since 2005, most consistant parameters in 19+ years of reefkeeping.

05/20/2006, 04:44 AM	#3
evildan Registered Member Join Date: Aug 2005 Location: essex Posts: 8	The setup is 2 years old i have 53kg of fiji live rock, the tanks is 4ft x 2 1/2ft x 2 1/2ft , with a 3ft x 1ft x 1 1/2 ft sump. with 4ft halides 2x250w 14,000k i replaced when i bought the light and 2x46in t5 blue. it is a mix of fish and corals. The temp is 78f. Its wasnt live sand when i bought it 2 years ago. Thanks for the help.

05/20/2006, 05:07 AM	#5
a4twenty Premium Member Join Date: Dec 2005 Location: Ontario, Canada Posts: 2,603	it's common to get an algae bloom when you upgrade your lights.

05/20/2006, 05:20 AM	#7
evildan Registered Member Join Date: Aug 2005 Location: essex Posts: 8	i have a deltec 1250 sump skimmer, i use tmc pro reef salt with tmc reminral as i use ro water in my tank. i use sevenoaks supergreen to feed the corals thats about it. i have a phos reactor with 100ml of rowaphos in it . Ive noticed since ive had theses lights the algae has gone mad i have to clean the glass in my tank every 2 days. calcium is fine my test kit is 20 drops is good which it is at my kh is 10 drops ph is 8.3 i use Hagen test kits at the mo. im awaiting salifert kits. http://www.s-t-m.co.uk/pages/super_green.htm <-- theres the link to the super green.

05/20/2006, 05:27 AM	#8
evildan Registered Member Join Date: Aug 2005 Location: essex Posts: 8	The fish i feed brine, krill ,mysis with garlic and fresh sea weed from tmc range.