Advice? Gfo or biopellets

They now have all in one bio pellets with Gfo in it at at bulk reef supply that I was going to try .

 

If you don't have problems with nitrates, biopellets won't be any help. They don't lower phosphate very much if at all especially if your system is low nitrates.
You must have phosphate bound up somewhere in your system. Either your rocks or sand or both. It's gonna take time to get those out. Gfo will exaust quickly with high readings. You may need to change weekly until you levels come down. They make liquid phosphate removers that may help. I haven't used them so can't comment on which to use but probably cheaper than Gfo until your levels are lower.
Just don't go from .2 or whatever to 0.00 overnight. Your corals will be pissed.
You may have to lighten feedings, clean sump, blow detritus from behind rocks, and step up water changes to multiple times a week.
I ran biopellets for 3 years. Worked well for nitrates but was 0 nitrate all the time. And my coral colors suffered. I got rid of the pellets and cut back the amount of Gfo used and run a scrubber. Now I run .02-.07 phosphate. I change media when readings are .07. And my nitrates run 2-4ppm. Coral colors are much better.
If you are dosing amino acids stop and cut back feedings. And if feed frozen, rinse in Rodi before feeding.
Is your scrubber properly sized?

 

Sounds like your on the right track. If you need help with your scrubber contact @Turbo's Aquatics he will help you out. It takes some time to get the screen going but should help once it's going.
With 0 nitrates don't bother with pellets. Not worth the extra equipment or hassle. They have their place but don't sound like you need it.

 

Just out of curiosity, when you say high phosphate, what is your reading and test kit your using? Any nuisance algaes?

 

After fully embracing the red sea stuff, don't think I'll ever try anything else. But nopox has to be used with reef energy. Then if you have a phosphate imbalance, increase the RE being dosed. And ya, I'vetried so much it was crazy

 

Be careful. Pellets can bring on a bunch if problems to if not used properly.
I have no experience with all in one pellets. Hopefully they work well for you.

 

Yup. Can suck oxygen out. Make sure you run effluent from pellet reactor directly into skimmer intake or right next to it. Start slow. Can cause cyano problems also.

 

Honestly. If it was me. I wouldn't run them. I have and won't do it again. They strip too much out of the water. It's hard to get the amount dialed in. That and another reactor cluttering your sump space and a feed pump.
I just run small amounts of carbon and gfo, a large skimmer, turbo algae scrubber and regular water changes.
On my other tank just a small skimmer and regular water changes. I have found through trial and error simple is way better and easier. Not saying a lot of equipment is bad just over complicated.
Of course this is just my experience. People do different things with great results also.

 

I am not saying dont run biopellets. Just do alot of research first. I just feel that in your case it is not needed. like @blackx-runner said your going to go through alot of media to get it out. I did the same thing. My rock had alot bound up too. It took a while to get it under control. Sometimes media would last a couple days then after awhile a couple weeks and now 5 or 6 weeks and i only run around 2/3 a cup on roughly 200 gallons. I am trying to get rid of it all together but have to go slow with a tank full of finniky SPS.
I think pellets are good to use in systems with a ton of fish and alot of food added. Just make sure go slow like 1/3 dose for 3 weeks and maybe go about 1/2 the amount and give them 8 weeks to culture and you will start to see results. Just skim the hell out of the effluent or you will have bacterial blooms. adjust your pellet amount to run the nitrates you want just dont zero or you will starve your corals and throw your nitrate/phosphate ratio out of balance and it will be hard to reduce phosphate. like david said if your nitrate limited its hard to reduce po4.
There are write ups on Reef Central and Reef2reef and many other forums if you want some boring reading material. but its helpful and good to know.