So Tried to Heal Sohm Al as an Astrologian...

[Ashquar]

And failed miserably. Not sure why. I was only in there for around about 5 minutes or so before I got kick (deservedly I admit with no hard feelings). Tank did two separate pulls of mobs and even though I didn't DPS and focused on healing the tank died twice. The heals were not enough to keep up with the damage that they were taking despite using the WHM sect and keeping regen on them all the time and healing extra as well.
Tips and advice is welcome!!

[Israacf]

Your tank had crap gear.

[Ashquar]

He had full dreadwyrm gear. Is that considered good at that level?

[AlexanderThorolund]

I'd have to agree with Isra, sounds like under geared tank. I have healed Sohm Al 3 times now as an AST and had no problems at all.

Are you using synastry?

[Lemuel81]

I wouldnt be too quick to say its your fault.

Did he pull too many mobs at once (trash hit like a truck)
Did he even use proper cooldowns, tank stance?

[technole]

He had full dreadwyrm gear. Is that considered good at that level?

What AST weapon do you have? I had the Ironworks upgraded i130 globe and no problems.

Full Dreadwyrm tank gear is fine up to The Vault (where it starts to really be felt as obsolete). Still have to use proper cooldowns or manage pulls depending on the party composition. I know I had to work a little bit as AST with a WAR's big pulls even with my full Dreadwyrm gear.

[Seryl199]

You can use the HoT from Aspected Helios to keep the tank up as well. You can cast it pretty early in the pull without fear of pulling hate, because the front loaded heal is smaller than Medica II, and will give you some extra potency on your ticking regen. As long as your tank is mitigating, you should be able to keep them up with Benefic spam. Even if the incoming damage is higher than what you're putting out, you can continue to chain cast Benefic to slow the drain on the tank's HP while fishing for an Enhanced Benefic II proc. By the time you need to refresh Aspected Benefic, the tank's HP should be getting low, so you can use Aspected Benefic, followed by an oGCD Essential Dignity, then a Benefic II, instant cast is ideal. If DPS is low, use Luminiferous Aether sooner rather than later, and while you wait for Essential Dignity to come off CD, be more liberal with Benefic II casts.

That's my own style for healing on AST, not a standard, so take that advice with a grain of salt, results may vary. If the tank pulls a lot or takes a lot of damage before you can even get both HoT's up, you'll be in a bit of a scramble to catch up. If you have Swiftcast up, use it to fire off Aspected Helios, or Benefic II if the tank is in danger already. If you've got HoT's up, you're back on your heels and you're spamming Benefic II on the tank and it's still not enough to keep them alive, they aren't mitigating well enough or they pulled too much.

[Rajeme]

And failed miserably. Not sure why. I was only in there for around about 5 minutes or so before I got kick (deservedly I admit with no hard feelings). Tank did two separate pulls of mobs and even though I didn't DPS and focused on healing the tank died twice. The heals were not enough to keep up with the damage that they were taking despite using the WHM sect and keeping regen on them all the time and healing extra as well.
Tips and advice is welcome!!

How much did you heal and how much hp he had? Do you mind to tell me about your gears?

I have healed all the way till the last dungeon and the only ones I had wipes was Neverreap and Fractal, in which there were many reasons and not just because of weak healing. It should be fine as long as you keep the HOT on as well as benefic I+II combination.

[Ghishlain]

DW gear is quite appropriate for Soma Al as the instance itself also drops i130 gear. Keyword here is "appropriate". DW gear back at the 50 cap would vastly outstrip the required gear level for any dungeon. However, DW gear for for Soma Al, would only be "partially above" the curve and not "completely overpowered".

Also, as others have mentioned previous, was the person in question using proper cooldowns and actually pulling more than normal? Just because a tank is in appropriate leveled gear doesn't give them a license to pull more than they can chew.

We also need to see what gear you were using as well. Were you also in at least i130 gear? If not, that could explain some of the trouble you had healing the tank. If you're still using an i115 weapon, that would hamper your performance.

[Selli]

He had full dreadwyrm gear. Is that considered good at that level?

Yes it is. The dungeon only drops i130 gear, so i130 Coil gear is still fine at that level. I healed that dungeon in full i130 Dread/Poe myself when I was leveling my AST.

Was he popping CDs? And waiting for your MP? If not, that is his fault.

The thing about AST is you need to think of yourself as a weaker 2.0 WHM trying to do 3.0 content. (I mean hella weak. At level 60 and i185 my WHM's Regens do a hefty 1.1k a tick, while at level 60 and i185 my AST's barely do 750. The lower potencies are very noticeable, so do be mindful of them).

Save any Ewers you get for yourself as well as Spears before you use LA. Pairing Lightspeed with Ewer can help a bit, but keep in mind Lightspeed will make your heals even weaker. Use your Regen-like skill as well as your Medica II-like skill, the extra HoTs will help a lot. AST does not have any mitigation (like how SCH's have Soil or Shadowflare and WHM's have Holy and Asylum), so you have no way to really reduce the damage the mobs do (Shadowflare has a slow, Holy stuns, Soil mitigates, and Asylum is another HoT). You're really at the mercy of the tank's CDs and your healing output.