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It is still occurring but not as bad as before. I am finding a lot of dertutis every day building up now I have removed the sand bed. Have been siphonning it out every day. There is no fish...

Its been around 3 weeks now and counting so must have been alot of nutrients....

We have pretty bad water in australia but i use carbon filtered water with no prime etc in my tank. you cant taste or smell any chlorine as the carbon takes it out. i do change filters fairly...

Photo period has been reduced to a few hours a day for the past week and is keeping it at bay. I noticed when i did this my scrubber started giving me darker algae. so whatever nutrients the bloom...

The algae i see makes the water look like a greenwater culture.

here is some of the water i have taken out as part of a water change....

Having a straight routered edge allows much better joins to be made. make sure you use books etc to hold weight on the join while the weldon dries otherwise your joints wont be very good.

I am getting a bit of 3d growth that is growing on the sides of the acrylic. If anything i would make it a little taller. I didnt really know where the water would sit for a given flow. It sits a...

When working with acrylic i have noticed that it will absorb moisture and bend. Since you have a very high ad long box it may be due to the moisture/weight of the 2inches of water in the bottm of...

If it is an overhead design. you can run a pipe down into the tank from the tray so that it is in the water. if you have sufficient flow it will raise the water level in the tray slightly and...

Thought i would do an update. scrubber is working great now. i have burnt the algae a few times by messing with the photoperiod but have it good now. it runs for 12 hours then in the middle of its...

i notice on my scrubber that the water squirting out from where the screen enters the pipe that it is too narrow. i opened mine up a little and found that it flowed down my screen better. not i...

you can use any dc pwer converter as long as it has the juice to run a computer fan. computer fans are designed to run up to 15V and usually at around .1A. Just about any of the dc power packs you...

i run a scrubber similer to the SM100. it has a 7cm gap where the screen goes. i use a couple of 12cm computer fans and just place them on top so that it blows down and over the screen onto the...

The light brown is the first type that i found grows. When i clean up around the slot so its perfectly clean to keep good flow then i clean off leaving only little strips of algae left the algae...

I have noticed these again and after cleaning with a scrubing brush they dont seam to come off easily so i doubt they are snails. i notice that if i leave them that algae will grow from them in the...

i would say it would work based on that half my scrubber is under water and i notice it does grow but its not as fast growth so maybe something to keep in mind. maybe build it so that half is in and...

starting to green back up again on the screen. i am cleaning every 3-4 days to get as much nutrient transport as possible. was at 20hr photperiod but have changed to a 18hr photperiod.

Before...

feather dusters are soem of the best filter feeders that can be housed in a system :) Not sure what the ones on the glass are but i have them aswell i had a hard look and some of them looked to be...

if you use a pump that has more flow then what you 'need' the extra slot width means little as long as the water makes it all the way to the end of your screen its fine. I found the wider my slot the...

The picture was before cleaning i should have made that more clear. i removed the elbow and upped the flow again with the elbow the flow would have spilled over the top of the box as the oulet of...

Tank is a 0,0,0 for ammonia,nitrite and nitrate and was hovering around 20ppm of nitrate before i started feeding more to kick start the scrubber. about a week after all tests came back 0 and since...

I have just been through this. I used cured live rock so had to ghost feed a bit to keep the bacteria up. I noticed that the scrubber didnt grow at all during the first few weeks till my grams were...

my screen is only lit 1 side but that is still 6 cubes of food a day. so i may definatly have to up the feeding regime

15 cubes hey. hm i built the scrubber to the original reccomendation i may have to have a look at the new ones you posted. By cube do you mean a 1cmx1cmx1cm cube or more like an ice cube. I assume...

I had the tank running after it cycled for a good 2 weeks. and had the scrubber running after the first week of clear ammonia and nitrite. Couldnt grow anything on it in a week so i switched it off...

Since mine in an above tank i found the force of teh water exiting would blow my substrate around so i put a foot valve strainer on the outlet of my scrubber to disperse the water evenly and stopped...

That's cool then I've been ghost feeding a litte while waiting for my test kit to arrive. Once it arrives I may start adding some stuff.

I may wait till I have some coloured growth so I know it is...

hey guys been a long time lurker and finally have my scrubber online after some time. I filled my tank last week added soem 2nd hand live rock (was base rock) and was waiting for the substrate to...

Im in australia and the only globes i can find are of 4000K without having to buy a box of 25. There about $10 each but should work fine still

so using the 810GPH pump will be better then using the smaller rated pump then as it allows for more flexibility in slot variation etc. No worries just thorught i would check and make sure before i...

Hi guys just finishing up on my scrubber very close copy of SM100 and was wondering on the pump to use. The unit will be above tank so will have very small head. I noticed that in the SM100 thread...

i have found that people that use skimmers are oblivious to what they actually do but use them coz it drags stinky stuff outta the water. By achieving something that is tangable most people feel...

PAR as in photosynthetic active radiation what the plant uses to actually grow

Its really about PAR per unit area for algae. That is where the efficiency comes from. Since algae has many chemical components that convert different parts of the spectrum into food for the algae...

I did have a quick thought of that but didnt think much of it due to the large difference in slot vs pipe diameter difference. it only pressure if the slot isnt big enough to flow the water and...

much appriciated rygh i also did some flow calcs and found that the 3/4 pipe was a little too small for the rated flow. I wanted to minimise the loss and maximise flow but couldnt be sure i wasnt...

Hey guys i have been designing my own scrubber based loosly on SM's as the length is what i like about it as it is going on top of my DT so all the pods can drop into the DT. one thing is that the...

at the distance you are using it try without you can always add it later if needed

the 24W T5 Ho's are only 2ft or 60cm lights there are 3 foot ones you are prolly best off using a 3 24W fixture on each side if you need to go higher. or you can use a similar setup to SM's scrubber...

good point on the T piece would add to rigidity and give better flow distrubution. i have reworked some of my calcs and have found that 1 fancy heat sink is fine for 15 XPE and 2 XPG all running at...

Also i was looking at the centre entrance flow as a T piece using alot of glue then cutting the full length and only using 1 screen if the Tpiece is any good with an approiate amount of glue would be...

essentially most white led's are blue (royal blue) LED's with phosphor coatings the cree XPE royal blue LED's at 350mA use 1.12W and output 425mW of light so thats about 38% efficient so only really...

Good idea on the heatsink. i think we are over heatsinking stuff normally tho there are some simple calculations to work out the thermal resistance needed of a heatsink. The use of fans greatly...

thinking about designs and water flow. Would having flow enter the pipe in the middle effect flow distrubution much?

looking good rygh i assume each algae pannel is 30W worth of LED's on those screens?

Sorry been away havent had time to check in on my OP. some interesting points. as far as i can tell form reading all the LED posts is that there are only a few of you at different stages of...

Hm reading through 22 pages of that LED thread shows some very good advancement and data found out.

have you increased your flow to your led screen yet rygh and has it helped with getting your...

The curve isnt for algae just a comparison from light plants need vs what the human eye sees (from which lux and lumans are deterimened) i believe that the A is just a averaged result form all the...

Thanks for some solid data on the lux findings you are getting.

There are some funny things with lux in that it is a measure of the light the human eye precieves in that it is weighted toward the...

Lets talk light for a minute.
Now light coming from a globe isnt dependant on the power is uses ie a 25W T5 isnt giving out 25Watts of light this is meaningless as light is measured by the amount of...