lighting and algae bloom

Hey all. I have a 40 gallon tank and i had a 2 bulb t5 ho fixture on it and about a month and a half ago a bought another 2 bulb fixture, so i now have 4 bulbs. I thought I did a pretty slow acclimation of the second light but last week i started noticing algae on the sand bed and film algae on the glass, so i turned off my second fixture and was gunna try to re acclimate it but the algae just got worse. is it going to cause a bigger algae problem if I decrease the amount of light, or should i just leave the light on and let it pass? thanks

 

bump

 

Decrease your light for now

what are your water parameters? what brand of light bulbs do you have?

how old are your light bulbs?

 

alk- 300 ppm
ph- 8.3
nitrate- 0
nitrite- 0
temp- 78
sg- 1.024
Giesemann 2 aquablues 2 actinic+
2 bulbs are 6 months, and 2 are 1 month

 

bump

 

Get a BRS GFO Reactor. It is a reactor that lower your phosphates and kills algae. haha Best $90 i ever spent!!! BRS GFO and Carbon Reactor - English

 

cool thanks for the link ive been wanting to get one of thoes. but will i have more of an algae problem if i decrese my light or if i keep it on

 

You could do a black-out for a couple days. Like 2-4. It wont hurt your corals at all. I did one the other day and it whiped the tank clean of algae. Now i am running the reactor and my tank is algae FREE!

 

most algae are photosynthetic so no light=no growth. Make sure u know a good deal about running gfo before you put it in place. Running just a little too much and you can strip your tank down so fast it will harm your coral. Make sure u have a good test kit or Hanna ppb meter before using gfo

sent from my samsung captivate via tapatalk

 

You will need exactly .63 cups of GFO for a 40 gal. Or 10 tbsp. hehe