24th December 2018
So, after 6 years and promising myself to get a scrubber again, I have finally done something about it. I have seen one other review of this unit from a couple of years ago, the seller has added extra lights each side now. For about £120 GBP, I don't think it is too bad and much better than I could make:
27th December 2018
So, I managed to get the unit into my sump yesterday. It wasn't quite long enough to sit on the brace bars, so had to make a basic support for it. Headroom for easy maintenance could be an issue, but I expect it to improve once nutrients lower and I can remove the skimmer. It is also difficult to remove the light covers as they fit in a groove and slide in from the top, so difficult to assess the flow across the screen.
There is only one drain on this unit, no emergency overflow, but the hole is quite large and fitted with a tank connector. Once running, as I thought, it was quite noisy draining out of the unit with the water splashing. A quick trip to the LFS and a purchase of some 38mm flexi tube and it now drains under the surface, now silent running
My thoughts of using the original screen went out of the window as it is about 2" short of the slot. I have had to fit it as a temporary measure as the supplied new screen hadn't been roughed up. I am hoping that the green which grows this week on the old screen, I can harvest and rub into the new screen to help seed that a bit quicker. Nutrient levels have been allowed to get out of hand, so am looking forward to seeing how this goes. Once new screen is fitted and running, I shall take some parameters and post, then follow the experience.
5th January 2019
So, it has been going for 7 days and the screen is filling with an oily algae on both sides which is good, shows some of the excessive nutrients are being reduced. I am also dosing vodka at 5ml per day whilst bringing the levels down. I am still vodka dosing alongside in an attempt to get levels lower, before removing the skimmer. When first tested No3 was a shocking 50ppm, today it has come down to 25ppm, still excessive, but better. Po4 is showing as 0.5, both tests are Salifert. 10g of algae came off the screens today, so I have used it to seed the new screen.
|Side 1||Side 2|
New screen, seeded with older algae and filling the complete slot.
10th January 2019
I have been somewhat disappointed with the performance of the scrubber this week, although it has only been 5 days growth. The screen is streaky, indicating there is either not enough flow, or the slot is clogging. Growth on this screen today didn't even register above 0g today! Vodka dosing is still continuing at 5ml per day, nitrates have remained at 25ppm and Phoshate at 0.5.
|Side 1||Side 2|
I am not 100% sure what the flow rate of the fitted pump was, but I know it was less than the Maxijet 1200 I am having to use to mix my salt now. I have taken the opportunity of swapping pumps over today, hopefully that will help to increase the amount of flow across all of the screen.
18th January 2019
The spraybar seemed to be splashing outwards and upon removal seemed a bit blocked. Cleaning off the screen, I am not sure if the slot is wide enough, something to check on. So I got a whole 6g of oily algae off today. No3 has dropped to 10ppm, Po4 is still 0.5.
|Side 1||Side 2|
24th February 2019
More than a little disappointed with the scrubber at the moment, it doesn't seem to be producing any better results. I have increased the lighting period by 2 hours this week, result? Algae removal decreased by 2g!! I have taken the whole unit out today for a clean (something I never had to do with my DIY unit) and algae had built up inside quite a bit. I didn't believe the leds were particularly good at the outset, and seeing how they have(n't) lasted over only a couple of months proves I was possibly correct.