Intensity reduction and algae
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Specific Aspects of a Planted Tank > Lighting

Thread Tools Display Modes
Old 12-04-2014, 10:30 AM   #1
Algae Grower
lee739's Avatar
PTrader: (0/0%)
Join Date: Oct 2014
Location: Australia
Posts: 115

Intensity reduction and algae

I have LED lights in a hood, they are probably an inch over the water surface. Manufacturer claims 56PAR at 40cm.
I am getting some green hair algae in the upper zones, down to maybe 3-4" depth. If the lights were suspended, I'd hoist them up 3-4" and hopefully help the problem.
Current light program - 7hr full intensity, with 2hr sunrise/sunset either side.
I can dial down the intensity with a controller - what % do people feel would do similar??

Other details:
CO2 injected - pH 6.72, KH 3.5
EI ferts, full dose (daily).
50% w/c weekly minimum, usually a second 40% and mulm/filter clean out as well.

Last edited by lee739; 12-04-2014 at 07:44 PM.. Reason: grammar
lee739 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 12-04-2014, 01:22 PM   #2
Wannabe Guru
philipraposo1982's Avatar
PTrader: (0/0%)
Join Date: Mar 2014
Location: Ontario, Canada
Posts: 1,148

Your light doesn't seem that bad if your injecting co2. But raising your lighting will most definitely help. Up the co2 if your can do it safely as well.
philipraposo1982 is online now   Reply With Quote Quick reply to this message
Old 12-04-2014, 05:03 PM   #3
Algae Grower
PTrader: (0/0%)
Join Date: Nov 2014
Location: Bellingham, WA
Posts: 17

Since you're asking, here's what I would try if it were me:

Leave the light at its current height
Change from 7 hrs full and 2/2 to 4 hrs full and 2/2
See if you can raise your CO2 level some without adversely affecting any fauna
Give it about two weeks to see if there are any changes
Zippos is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 03:49 PM.

Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012