diff --git a/requirements.txt b/requirements.txt
index 125ad9d..b0ebf9b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,3 +12,4 @@ hexbytes
 websockets
 cachetools
 async-lru
+eth-bloom
diff --git a/src/dexorder/pools.py b/src/dexorder/pools.py
index e5fc920..163ba78 100644
--- a/src/dexorder/pools.py
+++ b/src/dexorder/pools.py
@@ -44,7 +44,7 @@ async def load_pool(address: str) -> PoolDict:
                 decimals = token0['decimals'] - token1['decimals']
                 found = PoolDict(type='Pool', chain=chain_id, address=address, exchange=Exchange.UniswapV3.value,
                                  base=t0, quote=t1, fee=fee, decimals=decimals)
-                log.debug(f'new UniswapV3 pool {token0["symbol"]}/{token1["symbol"]} {fee/1_000_000:.2%}'
+                log.debug(f'new UniswapV3 pool {token0["symbol"]}/{token1["symbol"]} {fee/1_000_000:.2%} '
                           f'{("."+str(decimals)) if decimals >= 0 else (str(-decimals)+".")} {address}')
     except ContractLogicError:
         pass
diff --git a/src/dexorder/progressor.py b/src/dexorder/progressor.py
index 7b0d356..08637de 100644
--- a/src/dexorder/progressor.py
+++ b/src/dexorder/progressor.py
@@ -80,23 +80,24 @@ class BlockProgressor(metaclass=ABCMeta):
             # we remove entries as we process them, so the exception handler doesn't re-await the callbacks
             batch = batches.pop(0)
             future, callback, event, filter_args = batch
-            if future is None:
+            if filter_args is None:
                 await maywait(callback())  # non-log callback
             else:
-                try:
-                    log_events = await future if config.parallel_logevent_queries else future
-                except ValueError as e:
-                    if e.args[0].get('code') == -32602:
-                        # too many logs were returned in the batch, so decrease the batch size.
-                        fatal(f'Decrease batch size for {chain}')
-                    raise
                 parsed_events = []
-                for log_event in log_events:
+                if future is not None:
                     try:
-                        parsed = event.process_log(log_event) if event is not None else log_event
-                    except (LogTopicError, MismatchedABI) as e:
-                        # log.debug(f'logevent parse error {e}\n{log_event}') # this happens for Swap events from non-Uniswap pools
-                        parsed = NARG  # need a placeholder
-                    parsed_events.append(parsed)
+                        log_events = await future if config.parallel_logevent_queries else future
+                    except ValueError as e:
+                        if e.args[0].get('code') == -32602:
+                            # too many logs were returned in the batch, so decrease the batch size.
+                            fatal(f'Decrease batch size for {chain}')
+                        raise
+                    for log_event in log_events:
+                        try:
+                            parsed = event.process_log(log_event) if event is not None else log_event
+                        except (LogTopicError, MismatchedABI) as e:
+                            # log.debug(f'logevent parse error {e}\n{log_event}') # this happens for Swap events from non-Uniswap pools
+                            parsed = NARG  # need a placeholder
+                        parsed_events.append(parsed)
                 # todo try/except for known retryable errors
                 await maywait(callback(parsed_events))
diff --git a/src/dexorder/runner.py b/src/dexorder/runner.py
index 656f233..5228633 100644
--- a/src/dexorder/runner.py
+++ b/src/dexorder/runner.py
@@ -3,6 +3,7 @@ import logging
 from asyncio import Queue
 from typing import Any, Iterable, Callable
 
+from eth_bloom import BloomFilter
 from web3.exceptions import LogTopicError, MismatchedABI
 # noinspection PyPackageRequirements
 from websockets.exceptions import ConnectionClosedError
@@ -16,7 +17,7 @@ from dexorder.blockstate.diff import DiffEntryItem
 from dexorder.database.model import Block
 from dexorder.database.model.block import current_block, latest_block
 from dexorder.progressor import BlockProgressor
-from dexorder.util import hexstr
+from dexorder.util import hexstr, hexint, hexbytes
 from dexorder.util.async_util import maywait, Maywaitable
 from dexorder.util.shutdown import fatal
 
@@ -282,16 +283,22 @@ class BlockStateRunner(BlockProgressor):
                 else:
                     # event callbacks are triggered in the order in which they're registered. the events passed to
                     # each callback are in block transaction order
+                    bloom = BloomFilter(int.from_bytes(block.data['logsBloom']))
                     for callback, event, log_filter in self.events:
                         if log_filter is None:
                             batches.append((None, callback, event, None))
                         else:
-                            # todo use head['logsBloom'] to skip unnecessary log queries
                             lf = dict(log_filter)
                             lf['blockHash'] = hexstr(block.hash)
-                            get_logs = w3.eth.get_logs(lf)
-                            if not config.parallel_logevent_queries:
-                                get_logs = await get_logs
+                            has_logs = any(bytes(hexbytes(topic)) in bloom for topic in lf['topics'])
+                            # log.debug(f'has {event.__class__.__name__}? {has_logs}')
+                            if not has_logs:
+                                get_logs = None
+                            else:
+                                # log.debug(f'has {event.__class__.__name__}')
+                                get_logs = w3.eth.get_logs(lf)
+                                if not config.parallel_logevent_queries:
+                                    get_logs = await get_logs
                             batches.append((get_logs, callback, event, log_filter))
                 for callback in self.postprocess_cbs:
                     batches.append((None, callback, None, None))