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  Topic Review (Newest First)
Today 01:24 PM
5 years later...

Originally Posted by tuffgong View Post
Received my Grech GW-302 with no broken parts. It looks exactly like the SunSun mentioned in the OP. The box has which is 98% chinese, but does have the full line of the filters available for viewing. There are also a nice set of instructions with diagrams and photos in the box. The actual box itself has pretty detailed product info also. Hopefully I can post pics later. It took me all of 15 minutes to setup once i finished looking over all the cool parts. The hardest part was deciding what media i wanted to put in those huge baskets. Mine came with 2 white filter sponges, a thick blue coarse sponge, some crushed coral in a mesh bag, and some lava rock or something in a mesh bag. Once I got my media straight it was a breeze to get everything hooked up and running in tank. I filled the canister up before closing it and only had to hit the prime button once to get the tank to fill. I'm only using one of the spray bars since it's on a 10 gallon and the flow is great. I might drill the holes larger or go find some ball valves to regulate flow. I'm not using the protein skimmer b/c it takes up too much room in this small tank.

It's been running about an hour now and the tank is crystal clear already. Not sure if I will leave this filter on this tank permanently, but it needed a new filter so it's going to be the lab rat. I also have a 30 gal hex running to Aqua Clear HOB's that I want to get a canister for. So if everything goes right on the 10g then I will be purchasing another Grech/SunSun.

It's also running completely silent.
Based on this quote, I setup my first SunSun over 5 years ago. I'm pleased to say they are both still running strong. The UV light is dead but I wasn't using it that much anyway. The water clarity is super clear and I don't have any problems with water quality. I'm lazy and I hate cleaning my canisters so they go at least 6 months between cleanings.

I really love these filters and they are a great value.
08-20-2015 06:13 PM
JPrice904 Just ordered a 404b for my cichlid tank. Looking forward to it getting here. It also comes with media.
07-10-2015 06:47 PM
Patriot For those who replace the hoses and spray bar what do you go with? I find them too ridged.
06-20-2015 01:08 PM
Originally Posted by Oso Polar View Post
Is it possible to adjust the flow on these filters if it'll be too much?
I plumped in my own valves on both the in and out side.
I use the out valve to adjust flow.
I didn't realize the quick release was a shut off valve until later.
06-20-2015 12:10 PM
Oso Polar Is it possible to adjust the flow on these filters if it'll be too much?
06-19-2015 10:22 PM
Originally Posted by Oso Polar View Post
What will be a good model for 50 gallon tank? 303A/303B or 304A/304B? Does somebody know what is the difference between 30x and 40x models, e.g. 303A and 403A? Description seems to be the same, so is it only color - white vs gray?!

Is UV usefull or A models (without UV lamp) will be a better choice?
Ah sunsuns, I have 3 or 4 of them. They work great, I'd go with x04 versions. Can't go wrong with extra flow. I wouldn't bother paying the extra $ for the UV/A version. I bought one and its fairly useless and you can't easily tell if its working or not. If you need UV later I'd get a decent inline one. Other than that, I think the difference between the 3xx and 4xx series is the 4's are a newer revision. The 3's have been out for years now and there were no 4xx series when I bought my last one, so I'd probably go with the 4's if I were to buy one myself right now.

Sent from my Nexus 6 using Tapatalk
06-19-2015 06:56 PM
Oso Polar What will be a good model for 50 gallon tank? 303A/303B or 304A/304B? Does somebody know what is the difference between 30x and 40x models, e.g. 303A and 403A? Description seems to be the same, so is it only color - white vs gray?!

Is UV usefull or A models (without UV lamp) will be a better choice?
03-31-2015 06:24 PM
santacruz Mine after 5 days working
Only good things to say
Never had such a cristal clear water. Even with the JBL.
The flow is good.
Not so silent as rhe JBL
03-30-2015 11:40 PM
wootlaws Mines (Aquatop CF400UV) running strong and quiet after 2 years of 24/7 use. My prime button has gotten really hard to push as it will stay depressed after pushed probably needs to be lubricated and I don't clean my filter as religiously as some people maybe 6 months - 1 year at a time.
03-30-2015 08:53 PM
santacruz Is it normal the 302 piece of plastic on the out pipe?
A piece of white plastic (looks like a pre historic non return vale )
03-27-2015 07:39 PM
santacruz just received mine yesterday

de JBLe700 goes to a smaller tank

de diferences are nigth and day
the plastics are fragile but with some care it should be fine i hope

all the media from the 3 trays on the jbl only fill one and half trays on the sunsun!
this thing is huge
first prime was mouth to straberry water directly on the intake blarrrrg

the good news is that after 10 hours working the water is crystal clear much better than with the JBL !!

during the wekend will post some more of this fragile but cheap and powerfull canister

sorry my english but not a fan of google translator
02-15-2015 01:54 PM
c0ldn3s5 Just bought the sunsun 302 pro kit, can I put the trays back in wrong? I'm seeing sand come out the out take sometimes when a Cory is over by it. Wondering if the filter trays go in a certain way, I have the holes lined up all the way to the lid. Can I have them turned wrong?

06-08-2014 01:08 AM
jedimasterben I've had the HW-302 sitting unused since the tank I was going to be setting up didn't happen, and the current one is too small to use it effectively IMHO (especially with guppies), but now I've got another tank to put in its place that I'm gonna use it on, looking forward to it. I've been using the canister just as a mechanical filter every once in a while in my reef.
06-07-2014 10:19 PM
Sunsun review

I am always a big fan of Eheim filters until finally tried Sunsun HW-402B 4-stage, today for my new tank.

Still too early to tell but initial setup goes very well. This filter is powerful and quite. Its a big filter with UV sterilizer for just less than $65 shipped.
04-14-2014 11:47 PM
DennisS I have a 10 gal fresh. Do I need something to provide oxygen if I have the SunSun? I currently have just a Filter wheel.
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